diff --git a/cps/helper.py b/cps/helper.py
index a76fc3d7..d13496bc 100755
--- a/cps/helper.py
+++ b/cps/helper.py
@@ -238,7 +238,7 @@ def update_dir_structure_file(book_id, calibrepath):
         except OSError as ex:
             web.app.logger.error("Rename title from: " + path + " to " + new_title_path)
             web.app.logger.error(ex, exc_info=True)
-            return _('Rename title from: "%(src)s" to "%(dest)s" failed with error: %(error)s', src=path, dest=new_title_path, error=str(ex))
+            return _("Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s", src=path, dest=new_title_path, error=str(ex))
     if authordir != new_authordir:
         try:
             new_author_path = os.path.join(os.path.join(calibrepath, new_authordir), os.path.basename(path))
@@ -247,7 +247,7 @@ def update_dir_structure_file(book_id, calibrepath):
         except OSError as ex:
             web.app.logger.error("Rename author from: " + path + " to " + new_author_path)
             web.app.logger.error(ex, exc_info=True)
-            return _('Rename author from: "%(src)s" to "%(dest)s" failed with error: %(error)s', src=path, dest=new_title_path, error=str(ex))
+            return _("Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s", src=path, dest=new_title_path, error=str(ex))
     return False
 
 
diff --git a/cps/translations/de/LC_MESSAGES/messages.mo b/cps/translations/de/LC_MESSAGES/messages.mo
index 46dae3c1..c1d69aca 100644
Binary files a/cps/translations/de/LC_MESSAGES/messages.mo and b/cps/translations/de/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/de/LC_MESSAGES/messages.po b/cps/translations/de/LC_MESSAGES/messages.po
index 5694b3f2..44b85228 100644
--- a/cps/translations/de/LC_MESSAGES/messages.po
+++ b/cps/translations/de/LC_MESSAGES/messages.po
@@ -21,7 +21,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2016-07-12 19:54+0200\n"
 "Last-Translator: Ozzie Isaacs\n"
 "Language: de\n"
@@ -106,20 +106,16 @@ msgstr ""
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
-"Umbenennen des Titelpfades \"%(src)s\" nach \"%(dest)s\" schlug fehl: "
+"Umbenennen des Titelpfades '%(src)s' nach '%(dest)s' schlug fehl: "
 "%(error)s"
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
-"Umbenennen des Authorpfades \"%(src)s\" nach \"%(dest)s\" schlug fehl: "
+"Umbenennen des Authorpfades '%(src)s' nach '%(dest)s' schlug fehl: "
 "%(error)s"
 
 #: cps/helper.py:272 cps/helper.py:281
@@ -592,10 +588,10 @@ msgstr ""
 msgid "edit metadata"
 msgstr "Metadaten editieren"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
-msgstr ""
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
+msgstr "Dateiendung '%(ext)s' kann nicht auf diesen Server hochgeladen werden"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -642,13 +638,6 @@ msgstr "Cover ist keine JPG Datei, konnte nicht gespeichert werden"
 msgid "Error editing book, please check logfile for details"
 msgstr "Fehler beim Editieren des Buchs, Details im Logfile"
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr ""
-"Die Dateiendung \"%(ext)s\" kann nicht auf diesen Server hochgeladen "
-"werden"
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -1133,7 +1122,7 @@ msgstr "Öffentliche Registrierung aktivieren"
 
 #: cps/templates/config_edit.html:146
 msgid "Enable remote login (\"magic link\")"
-msgstr "Remote Login aktivieren (\"Magischer Link\")"
+msgstr "Remote Login aktivieren ('Magischer Link')"
 
 #: cps/templates/config_edit.html:151
 msgid "Use"
@@ -1883,3 +1872,6 @@ msgstr "Letzte Downloads"
 #~ "Ordner erzeugen für Cover %(cover)s "
 #~ "fehlgeschalgen (Zugriff verweigert)."
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
diff --git a/cps/translations/es/LC_MESSAGES/messages.mo b/cps/translations/es/LC_MESSAGES/messages.mo
index a6a74562..8444cf2c 100644
Binary files a/cps/translations/es/LC_MESSAGES/messages.mo and b/cps/translations/es/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/es/LC_MESSAGES/messages.po b/cps/translations/es/LC_MESSAGES/messages.po
index 6922eb7a..4bebecd8 100644
--- a/cps/translations/es/LC_MESSAGES/messages.po
+++ b/cps/translations/es/LC_MESSAGES/messages.po
@@ -14,7 +14,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2017-04-04 15:09+0200\n"
 "Last-Translator: Juan F. Villa <juan.villa@paisdelconocimiento.org>\n"
 "Language: es\n"
@@ -95,16 +95,12 @@ msgstr ""
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:272 cps/helper.py:281
@@ -569,10 +565,10 @@ msgstr ""
 msgid "edit metadata"
 msgstr "editar metainformación"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
-msgstr ""
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
+msgstr "No se permite subir archivos con la extensión '%(ext)s' a este servidor"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -619,11 +615,6 @@ msgstr ""
 msgid "Error editing book, please check logfile for details"
 msgstr ""
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr "No se permite subir archivos con la extensión \"%(ext)s\" a este servidor"
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -1853,14 +1844,12 @@ msgstr "Descargas Recientes"
 #~ msgid "E-Mail: %(book)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ "Rename author from: '%(src)s' to "
+#~ "'%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Password for user %(user)s reset"
@@ -1869,16 +1858,20 @@ msgstr "Descargas Recientes"
 #~ msgid "Password for user %s reset"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename author from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Failed to create path for cover %(cover)s (Permission denied)."
 #~ msgstr ""
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
+#~ msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
+#~ msgstr ""
+#~ "No se permite subir archivos con "
+#~ "la extensión \"%(ext)s\" a este servidor"
+
diff --git a/cps/translations/fr/LC_MESSAGES/messages.mo b/cps/translations/fr/LC_MESSAGES/messages.mo
index 7cd22ec0..e9a16e74 100644
Binary files a/cps/translations/fr/LC_MESSAGES/messages.mo and b/cps/translations/fr/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/fr/LC_MESSAGES/messages.po b/cps/translations/fr/LC_MESSAGES/messages.po
index 0b6999b5..5def48a2 100644
--- a/cps/translations/fr/LC_MESSAGES/messages.po
+++ b/cps/translations/fr/LC_MESSAGES/messages.po
@@ -20,7 +20,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2018-09-07 13:58+0200\n"
 "Last-Translator: Nicolas Roudninski <nicoroud@gmail.com>\n"
 "Language: fr\n"
@@ -51,7 +51,7 @@ msgid "%(format)s not found on Google Drive: %(fn)s"
 msgstr "le %(format)s est introuvable sur Google Drive : %(fn)s"
 
 #: cps/helper.py:76
-#, fuzzy, python-format
+#, python-format
 msgid "Convert: %(book)s"
 msgstr "Conversion : %(book)s"
 
@@ -91,7 +91,7 @@ msgid "Send to Kindle"
 msgstr "Envoyer vers Kindle"
 
 #: cps/helper.py:144 cps/worker.py:226
-#, fuzzy, python-format
+#, python-format
 msgid "E-mail: %(book)s"
 msgstr "Courriel : %(book)s"
 
@@ -101,21 +101,17 @@ msgstr "Le fichier demandé n’a pu être lu. Problème de permission d’accè
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
-"Renommer le titre de : \"%(src)s\" à \"%(dest)s\" a échoué avec l’erreur "
-": %(error)s"
+"Renommer le titre de : '%(src)s' à '%(dest)s' a échoué avec l’erreur : "
+"%(error)s"
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
-"Renommer l’auteur de : \"%(src)s\" à \"%(dest)s\" a échoué avec l’erreur "
-": %%(error)s"
+"Renommer l’auteur de : '%(src)s' à '%(dest)s' a échoué avec l’erreur : "
+"%(error)s"
 
 #: cps/helper.py:272 cps/helper.py:281
 #, python-format
@@ -262,7 +258,6 @@ msgid "Update done"
 msgstr "Mise à jour effectuée"
 
 #: cps/web.py:1837
-#, fuzzy
 msgid "Published after "
 msgstr "Publié après le "
 
@@ -353,7 +348,7 @@ msgid "Please configure the SMTP mail settings first..."
 msgstr "Veuillez configurer les paramètres SMTP au préalable…"
 
 #: cps/web.py:2289
-#, fuzzy, python-format
+#, python-format
 msgid "Book successfully queued for sending to %(kindlemail)s"
 msgstr ""
 "Le livre a été mis en file de traitement avec succès pour un envois vers "
@@ -603,10 +598,12 @@ msgstr ""
 msgid "edit metadata"
 msgstr "modifier les métadonnées"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
 msgstr ""
+"L’extension de fichier '%(ext)s' n’est pas autorisée pour être déposée "
+"sur ce serveur"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -657,13 +654,6 @@ msgstr ""
 "Erreur d’édition du livre, veuillez consulter le journal (log) pour plus "
 "de détails"
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr ""
-"L’extension de fichier \"%(ext)s\" n’est pas autorisée pour être déposée "
-"sur ce serveur"
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -717,7 +707,6 @@ msgstr ""
 "message : %(message)s"
 
 #: cps/worker.py:317 cps/worker.py:377 cps/worker.py:438
-#, fuzzy
 msgid "Finished"
 msgstr "Terminé"
 
@@ -1906,21 +1895,19 @@ msgstr "Téléchargements récents"
 #~ msgid "E-Mail: %(book)s"
 #~ msgstr "Courriel : %(book)s"
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
-#~ "Renommer le titre de : \"%(src)s\" "
-#~ "à \"%(dest)s\" a échoué avec l’erreur"
-#~ " : %(error)s"
+#~ "Renommer le titre de : '%(src)s' à"
+#~ " '%(dest)s' a échoué avec l’erreur :"
+#~ " %(error)s"
 
 #~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ "Rename author from: '%(src)s' to "
+#~ "'%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
-#~ "Renommer l’auteur de : \"%(src)s\" à "
-#~ "\"%(dest)s\" a échoué avec l’erreur :"
-#~ " %%(error)s"
+#~ "Renommer l’auteur de : '%(src)s' à "
+#~ "'%(dest)s' a échoué avec l’erreur : "
+#~ "%%(error)s"
 
 #~ msgid "Password for user %(user)s reset"
 #~ msgstr "Le mot de passe de l’utilisateur %(user)s a été réinitialisé"
@@ -1931,3 +1918,6 @@ msgstr "Téléchargements récents"
 #~ "d’accès pour la couverture %(cover)s "
 #~ "(Autorisation refusée)"
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
diff --git a/cps/translations/it/LC_MESSAGES/messages.mo b/cps/translations/it/LC_MESSAGES/messages.mo
index dcc842b6..90bafee6 100644
Binary files a/cps/translations/it/LC_MESSAGES/messages.mo and b/cps/translations/it/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/it/LC_MESSAGES/messages.po b/cps/translations/it/LC_MESSAGES/messages.po
index b5d899d1..6a21eeae 100644
--- a/cps/translations/it/LC_MESSAGES/messages.po
+++ b/cps/translations/it/LC_MESSAGES/messages.po
@@ -14,7 +14,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2017-04-04 15:09+0200\n"
 "Last-Translator: Marco Picone <marcovendere@gmail.com>\n"
 "Language: it\n"
@@ -95,16 +95,12 @@ msgstr ""
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:272 cps/helper.py:281
@@ -575,10 +571,12 @@ msgstr ""
 msgid "edit metadata"
 msgstr "modificare la metainformazione"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
 msgstr ""
+"Non è consentito caricare i file con l'estensione '%(ext)s' a questo "
+"server"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -625,13 +623,6 @@ msgstr ""
 msgid "Error editing book, please check logfile for details"
 msgstr ""
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr ""
-"Non è consentito caricare i file con l'estensione \"%(ext)s\" a questo "
-"server"
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -640,7 +631,7 @@ msgstr "Impossibile archiviare il file %(file)s (autorizzazione negata)"
 #: cps/web.py:3610
 #, python-format
 msgid "Failed to delete file %(file)s (Permission denied)."
-msgstr "Impossibile eliminare il file %s (autorizzazione negata)"
+msgstr "Impossibile eliminare il file %(file)s (autorizzazione negata)"
 
 #: cps/web.py:3692
 #, python-format
@@ -988,7 +979,7 @@ msgstr "Sei davvero sicuro?"
 
 #: cps/templates/book_edit.html:194
 msgid "Book will be deleted from Calibre database"
-msgstr "l libro verrà cancellato dal database Calibre\""
+msgstr "l libro verrà cancellato dal database Calibre'"
 
 #: cps/templates/book_edit.html:195
 msgid "and from hard disk"
@@ -1863,14 +1854,12 @@ msgstr "Download Recenti"
 #~ msgid "E-Mail: %(book)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ "Rename author from: '%(src)s' to "
+#~ "'%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Password for user %(user)s reset"
@@ -1879,16 +1868,21 @@ msgstr "Download Recenti"
 #~ msgid "Password for user %s reset"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename author from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Failed to create path for cover %(cover)s (Permission denied)."
 #~ msgstr ""
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
+#~ msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
+#~ msgstr ""
+#~ "Non è consentito caricare i file "
+#~ "con l'estensione \"%(ext)s\" a questo "
+#~ "server"
+
diff --git a/cps/translations/ja/LC_MESSAGES/messages.mo b/cps/translations/ja/LC_MESSAGES/messages.mo
index 31f205f5..635875e7 100644
Binary files a/cps/translations/ja/LC_MESSAGES/messages.mo and b/cps/translations/ja/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/ja/LC_MESSAGES/messages.po b/cps/translations/ja/LC_MESSAGES/messages.po
index aa9bf428..82ff9871 100644
--- a/cps/translations/ja/LC_MESSAGES/messages.po
+++ b/cps/translations/ja/LC_MESSAGES/messages.po
@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2018-02-07 02:20-0500\n"
 "Last-Translator: white <space_white@yahoo.com>\n"
 "Language: ja\n"
@@ -90,16 +90,12 @@ msgstr ""
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:272 cps/helper.py:281
@@ -564,10 +560,10 @@ msgstr "電子本を開けません。ファイルは存在しないまたはア
 msgid "edit metadata"
 msgstr "メタデータを編集します"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
-msgstr ""
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
+msgstr "ファイル拡張子 '%(ext)s' をこのサーバにアップロードする許可はありません"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -614,11 +610,6 @@ msgstr ""
 msgid "Error editing book, please check logfile for details"
 msgstr ""
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr "ファイル拡張子 \"%(ext)s\" をこのサーバにアップロードする許可はありません"
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -1099,7 +1090,7 @@ msgstr "公的登録を有効する"
 
 #: cps/templates/config_edit.html:146
 msgid "Enable remote login (\"magic link\")"
-msgstr "遠距離ログインを有効する (\"マジックリンク\")"
+msgstr "遠距離ログインを有効する ('マジックリンク')"
 
 #: cps/templates/config_edit.html:151
 msgid "Use"
@@ -1846,15 +1837,13 @@ msgstr "最近ダウンロード"
 #~ msgid "E-Mail: %(book)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
-#~ msgstr "タイトルを\"%(src)s\"から\"%(dest)s\"の改名は失敗しました。エーラ: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
+#~ msgstr "タイトルを'%(src)s'から'%(dest)s'の改名は失敗しました。エーラ: %(error)s"
 
 #~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
-#~ msgstr "著者を\"%(src)s\"から\"%(dest)s\"の改名は失敗しました。エーラ：%(error)s"
+#~ "Rename author from: '%(src)s' to "
+#~ "'%(dest)s' failed with error: %(error)s"
+#~ msgstr "著者を'%(src)s'から'%(dest)s'の改名は失敗しました。エーラ：%(error)s"
 
 #~ msgid "Password for user %(user)s reset"
 #~ msgstr ""
@@ -1862,16 +1851,18 @@ msgstr "最近ダウンロード"
 #~ msgid "Password for user %s reset"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename author from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Failed to create path for cover %(cover)s (Permission denied)."
 #~ msgstr ""
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
+#~ msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
+#~ msgstr "ファイル拡張子 \"%(ext)s\" をこのサーバにアップロードする許可はありません"
+
diff --git a/cps/translations/km/LC_MESSAGES/messages.mo b/cps/translations/km/LC_MESSAGES/messages.mo
index d6d0db72..11558e35 100644
Binary files a/cps/translations/km/LC_MESSAGES/messages.mo and b/cps/translations/km/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/km/LC_MESSAGES/messages.po b/cps/translations/km/LC_MESSAGES/messages.po
index 5a4b140c..4e58453e 100644
--- a/cps/translations/km/LC_MESSAGES/messages.po
+++ b/cps/translations/km/LC_MESSAGES/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2018-08-27 17:06+0700\n"
 "Last-Translator: \n"
 "Language: km_KH\n"
@@ -89,16 +89,12 @@ msgstr "ឯកសារដែលបានស្នើសុំមិនអាច
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr "ប្តូរចំណងជើងពី “%(src)s” ទៅជា “%(dest)s” បរាជ័យដោយបញ្ហា: %(error)s"
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr "ប្តូរអ្នកនិពន្ធពី “%(src)s” ទៅជា “%(dest)s” បរាជ័យដោយបញ្ហា: %(error)s"
 
 #: cps/helper.py:272 cps/helper.py:281
@@ -565,10 +561,10 @@ msgstr "មានបញ្ហាពេលបើកឯកសារ eBook ។ ព
 msgid "edit metadata"
 msgstr "កែប្រែទិន្នន័យមេតា"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
-msgstr ""
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
+msgstr "ឯកសារប្រភេទ '%(ext)s' មិនត្រូវបានអនុញ្ញាតឲអាប់ឡូដទៅម៉ាស៊ីន server នេះទេ"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -615,11 +611,6 @@ msgstr "គម្របមិនមែនជាឯកសារ JPG មិនអ
 msgid "Error editing book, please check logfile for details"
 msgstr "មានបញ្ហាពេលកែប្រែសៀវភៅ សូមពិនិត្យមើល logfile សម្រាប់ព័ត៌មានបន្ថែម"
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr "ឯកសារប្រភេទ “%(ext)s” មិនត្រូវបានអនុញ្ញាតឲអាប់ឡូដទៅម៉ាស៊ីន server នេះទេ"
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -1851,14 +1842,12 @@ msgstr "ការទាញយកថ្មីៗ"
 #~ msgid "E-Mail: %(book)s"
 #~ msgstr "អ៊ីមែល៖ %(book)s"
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 #~ msgstr "ប្តូរចំណងជើងពី “%(src)s” ទៅជា “%(dest)s” បរាជ័យដោយបញ្ហា: %(error)s"
 
 #~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ "Rename author from: '%(src)s' to "
+#~ "'%(dest)s' failed with error: %(error)s"
 #~ msgstr "ប្តូរអ្នកនិពន្ធពី “%(src)s” ទៅជា “%(dest)s” បរាជ័យដោយបញ្ហា: %(error)s"
 
 #~ msgid "Password for user %(user)s reset"
@@ -1867,16 +1856,18 @@ msgstr "ការទាញយកថ្មីៗ"
 #~ msgid "Password for user %s reset"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename author from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Failed to create path for cover %(cover)s (Permission denied)."
 #~ msgstr ""
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
+#~ msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
+#~ msgstr "ឯកសារប្រភេទ “%(ext)s” មិនត្រូវបានអនុញ្ញាតឲអាប់ឡូដទៅម៉ាស៊ីន server នេះទេ"
+
diff --git a/cps/translations/nl/LC_MESSAGES/messages.mo b/cps/translations/nl/LC_MESSAGES/messages.mo
index e28d5680..e01bcc57 100644
Binary files a/cps/translations/nl/LC_MESSAGES/messages.mo and b/cps/translations/nl/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/nl/LC_MESSAGES/messages.po b/cps/translations/nl/LC_MESSAGES/messages.po
index 4ed00487..268d9006 100644
--- a/cps/translations/nl/LC_MESSAGES/messages.po
+++ b/cps/translations/nl/LC_MESSAGES/messages.po
@@ -22,7 +22,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Calibre-Web dutch translation by Ed Driesen (GPL V3)\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2017-06-21 20:15+0200\n"
 "Last-Translator: \n"
 "Language: nl\n"
@@ -103,16 +103,12 @@ msgstr ""
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:272 cps/helper.py:281
@@ -581,10 +577,12 @@ msgstr "Fout bij openen eBook. Het bestand bestaat niet of is niet toegankelijk"
 msgid "edit metadata"
 msgstr "Bewerk metadata"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
 msgstr ""
+"Het uploaden van bestandsextensie '%(ext)s' is niet toegestaan op deze "
+"server"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -631,13 +629,6 @@ msgstr ""
 msgid "Error editing book, please check logfile for details"
 msgstr ""
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr ""
-"Het uploaden van bestandsextensie \"%(ext)s\" is niet toegestaan op deze "
-"server"
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -1873,14 +1864,12 @@ msgstr "Recente Downloads"
 #~ msgid "E-Mail: %(book)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ "Rename author from: '%(src)s' to "
+#~ "'%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Password for user %(user)s reset"
@@ -1889,16 +1878,20 @@ msgstr "Recente Downloads"
 #~ msgid "Password for user %s reset"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename author from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Failed to create path for cover %(cover)s (Permission denied)."
 #~ msgstr ""
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
+#~ msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
+#~ msgstr ""
+#~ "Het uploaden van bestandsextensie \"%(ext)s\""
+#~ " is niet toegestaan op deze server"
+
diff --git a/cps/translations/pl/LC_MESSAGES/messages.mo b/cps/translations/pl/LC_MESSAGES/messages.mo
index ab0e61f0..7c8cb27f 100644
Binary files a/cps/translations/pl/LC_MESSAGES/messages.mo and b/cps/translations/pl/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/pl/LC_MESSAGES/messages.po b/cps/translations/pl/LC_MESSAGES/messages.po
index 75a979b6..4eafc524 100644
--- a/cps/translations/pl/LC_MESSAGES/messages.po
+++ b/cps/translations/pl/LC_MESSAGES/messages.po
@@ -12,7 +12,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Calibre Web - polski (POT: 2017-04-11 22:51)\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2017-04-11 22:51+0200\n"
 "Last-Translator: Radosław Kierznowski <radek.kierznowski@outlook.com>\n"
 "Language: pl\n"
@@ -94,16 +94,12 @@ msgstr ""
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:272 cps/helper.py:281
@@ -568,10 +564,12 @@ msgstr ""
 msgid "edit metadata"
 msgstr "edytuj metadane"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
 msgstr ""
+"Rozszerzenie pliku '%(ext)s' nie jest dozwolone do przesłania na ten "
+"serwer"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -618,13 +616,6 @@ msgstr ""
 msgid "Error editing book, please check logfile for details"
 msgstr ""
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr ""
-"Rozszerzenie pliku \"%(ext)s\" nie jest dozwolone do przesłania na ten "
-"serwer"
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -1862,14 +1853,12 @@ msgstr "Ostatnio pobierane"
 #~ msgid "E-mail: %stitle"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ "Rename author from: '%(src)s' to "
+#~ "'%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Password for user %(user)s reset"
@@ -1878,16 +1867,20 @@ msgstr "Ostatnio pobierane"
 #~ msgid "Password for user %s reset"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename author from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Failed to create path for cover %(cover)s (Permission denied)."
 #~ msgstr ""
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
+#~ msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
+#~ msgstr ""
+#~ "Rozszerzenie pliku \"%(ext)s\" nie jest "
+#~ "dozwolone do przesłania na ten serwer"
+
diff --git a/cps/translations/ru/LC_MESSAGES/messages.mo b/cps/translations/ru/LC_MESSAGES/messages.mo
index 3d2d2032..e755d5f8 100644
Binary files a/cps/translations/ru/LC_MESSAGES/messages.mo and b/cps/translations/ru/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/ru/LC_MESSAGES/messages.po b/cps/translations/ru/LC_MESSAGES/messages.po
index b7380e88..28defadc 100644
--- a/cps/translations/ru/LC_MESSAGES/messages.po
+++ b/cps/translations/ru/LC_MESSAGES/messages.po
@@ -14,7 +14,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2017-04-30 00:47+0300\n"
 "Last-Translator: Pavel Korovin <p@tristero.se>\n"
 "Language: ru\n"
@@ -96,16 +96,12 @@ msgstr ""
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:272 cps/helper.py:281
@@ -570,10 +566,10 @@ msgstr ""
 msgid "edit metadata"
 msgstr "изменить метаданные"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
-msgstr ""
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
+msgstr "Запрещена загрузка файлов с расширением '%(ext)s'"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -620,11 +616,6 @@ msgstr ""
 msgid "Error editing book, please check logfile for details"
 msgstr ""
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr "Запрещена загрузка файлов с расширением \"%(ext)s\""
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -1852,14 +1843,12 @@ msgstr "Недавние скачивания"
 #~ msgid "E-Mail: %s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
+#~ "Rename author from: '%(src)s' to "
+#~ "'%(dest)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Password for user %(user)s reset"
@@ -1868,16 +1857,18 @@ msgstr "Недавние скачивания"
 #~ msgid "Password for user %s reset"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename author from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Failed to create path for cover %(cover)s (Permission denied)."
 #~ msgstr ""
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
+#~ msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
+#~ msgstr "Запрещена загрузка файлов с расширением \"%(ext)s\""
+
diff --git a/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.mo b/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.mo
index a5df0f0d..86bd49c0 100644
Binary files a/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.mo and b/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.mo differ
diff --git a/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.po b/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.po
index ba84d36d..7ac69625 100644
--- a/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.po
+++ b/cps/translations/zh_Hans_CN/LC_MESSAGES/messages.po
@@ -15,7 +15,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  Calibre-Web\n"
 "Report-Msgid-Bugs-To: https://github.com/janeczku/Calibre-Web\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: 2017-01-06 17:00+0000\n"
 "Last-Translator: dalin <dalin.lin@gmail.com>\n"
 "Language: zh_Hans_CN\n"
@@ -96,17 +96,13 @@ msgstr "无法读取请求的文件。 可能有错误的权限设置？"
 
 #: cps/helper.py:241
 #, python-format
-msgid ""
-"Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
-msgstr "将标题从\"%(src)s\"改为\"%(dest)s\"时失败，出错信息: %(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
+msgstr "将标题从'%(src)s'改为'%(dest)s'时失败，出错信息: %(error)s"
 
 #: cps/helper.py:250
 #, python-format
-msgid ""
-"Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: "
-"%(error)s"
-msgstr "将作者从\"%(src)s\"改为\"%(dest)s\"时失败，出错信息: %(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
+msgstr "将作者从'%(src)s'改为'%(dest)s'时失败，出错信息: %(error)s"
 
 #: cps/helper.py:272 cps/helper.py:281
 #, python-format
@@ -377,7 +373,7 @@ msgstr "书籍已经在书架 %(name)s 中了"
 #: cps/web.py:2392
 #, python-format
 msgid "Books have been added to shelf: %(sname)s"
-msgstr "书籍已经被添加到书架 %(sname)s 中\""
+msgstr "书籍已经被添加到书架 %(sname)s 中'"
 
 #: cps/web.py:2394
 #, python-format
@@ -442,7 +438,7 @@ msgstr "修改书架 '%(name)s' 顺序"
 
 #: cps/web.py:2601 cps/web.py:3012
 msgid "E-mail is not from valid domain"
-msgstr "邮箱不在有效域中\""
+msgstr "邮箱不在有效域中'"
 
 #: cps/web.py:2603 cps/web.py:2644 cps/web.py:2647
 #, python-format
@@ -570,10 +566,10 @@ msgstr "打开电子书出错。文件不存在或不可访问"
 msgid "edit metadata"
 msgstr "编辑元数据"
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
-msgstr ""
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
+msgstr "不能上传后缀为　'%(ext)s'　的文件到此服务器"
 
 #: cps/web.py:3288 cps/web.py:3580
 msgid "File to be uploaded must have an extension"
@@ -620,11 +616,6 @@ msgstr "封面不是一个jpg文件，无法保存"
 msgid "Error editing book, please check logfile for details"
 msgstr "编辑书籍出错，详情请检查日志文件"
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr "不能上传后缀为　\"%(ext)s\"　的文件到此服务器"
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."
@@ -1105,7 +1096,7 @@ msgstr "启用注册"
 
 #: cps/templates/config_edit.html:146
 msgid "Enable remote login (\"magic link\")"
-msgstr "启用远程登录 (\"魔法链接\")"
+msgstr "启用远程登录 ('魔法链接')"
 
 #: cps/templates/config_edit.html:151
 msgid "Use"
@@ -1855,15 +1846,13 @@ msgstr "最近下载"
 #~ msgid "E-Mail: %s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
-#~ msgstr "将标题从\"%(src)s\"改为\"%(dest)s\"时失败，出错信息: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
+#~ msgstr "将标题从'%(src)s'改为'%(dest)s'时失败，出错信息: %(error)s"
 
 #~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(dest)s\" failed with error: %(error)s"
-#~ msgstr "将作者从\"%(src)s\"改为\"%(dest)s\"时失败，出错信息: %(error)s"
+#~ "Rename author from: '%(src)s' to "
+#~ "'%(dest)s' failed with error: %(error)s"
+#~ msgstr "将作者从'%(src)s'改为'%(dest)s'时失败，出错信息: %(error)s"
 
 #~ msgid "Password for user %(user)s reset"
 #~ msgstr "用户 %(user)s 的密码已重置"
@@ -1871,16 +1860,18 @@ msgstr "最近下载"
 #~ msgid "Password for user %s reset"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename title from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename title from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
-#~ msgid ""
-#~ "Rename author from: \"%(src)s\" to "
-#~ "\"%(src)s\" failed with error: %(error)s"
+#~ msgid "Rename author from: '%(src)s' to '%(src)s' failed with error: %(error)s"
 #~ msgstr ""
 
 #~ msgid "Failed to create path for cover %(cover)s (Permission denied)."
 #~ msgstr "为封面 %(cover)s 创建路径失败(权限拒绝)。"
 
+#~ msgid "File extension '%s' is not allowed to be uploaded to this server"
+#~ msgstr ""
+
+#~ msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
+#~ msgstr "不能上传后缀为　\"%(ext)s\"　的文件到此服务器"
+
diff --git a/cps/web.py b/cps/web.py
index 5cec6d68..3c0954f8 100644
--- a/cps/web.py
+++ b/cps/web.py
@@ -3281,7 +3281,7 @@ def edit_book(book_id):
             if '.' in requested_file.filename:
                 file_ext = requested_file.filename.rsplit('.', 1)[-1].lower()
                 if file_ext not in ALLOWED_EXTENSIONS:
-                    flash(_('File extension "%s" is not allowed to be uploaded to this server' % file_ext),
+                    flash(_("File extension '%(ext)s' is not allowed to be uploaded to this server", ext=file_ext),
                           category="error")
                     return redirect(url_for('show_book', book_id=book.id))
             else:
@@ -3573,7 +3573,7 @@ def upload():
                 file_ext = requested_file.filename.rsplit('.', 1)[-1].lower()
                 if file_ext not in ALLOWED_EXTENSIONS:
                     flash(
-                        _('File extension "%(ext)s" is not allowed to be uploaded to this server',
+                        _("File extension '%(ext)s' is not allowed to be uploaded to this server",
                           ext=file_ext), category="error")
                     return redirect(url_for('index'))
             else:
diff --git a/messages.pot b/messages.pot
index 3ca9bd94..96c53c06 100644
--- a/messages.pot
+++ b/messages.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2018-09-08 12:22+0200\n"
+"POT-Creation-Date: 2018-09-08 14:49+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -87,12 +87,12 @@ msgstr ""
 
 #: cps/helper.py:241
 #, python-format
-msgid "Rename title from: \"%(src)s\" to \"%(dest)s\" failed with error: %(error)s"
+msgid "Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:250
 #, python-format
-msgid "Rename author from: \"%(src)s\" to \"%(dest)s\" failed with error: %(error)s"
+msgid "Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s"
 msgstr ""
 
 #: cps/helper.py:272 cps/helper.py:281
@@ -555,9 +555,9 @@ msgstr ""
 msgid "edit metadata"
 msgstr ""
 
-#: cps/web.py:3284
+#: cps/web.py:3284 cps/web.py:3576
 #, python-format
-msgid "File extension \"%s\" is not allowed to be uploaded to this server"
+msgid "File extension '%(ext)s' is not allowed to be uploaded to this server"
 msgstr ""
 
 #: cps/web.py:3288 cps/web.py:3580
@@ -605,11 +605,6 @@ msgstr ""
 msgid "Error editing book, please check logfile for details"
 msgstr ""
 
-#: cps/web.py:3576
-#, python-format
-msgid "File extension \"%(ext)s\" is not allowed to be uploaded to this server"
-msgstr ""
-
 #: cps/web.py:3605
 #, python-format
 msgid "Failed to store file %(file)s (Permission denied)."