Content Server Problem Read of CBZ/CBR

Andreas · 04-14-2025, 01:31 PM

I like the content server and also to use the "read" option, that works good for books like epub.
But I would like to use it also with Comics in CBZ or CBR. But this formats always display an error, that is not dependent on the Browser I use (Tested with samsung Internet and Chrome on Android and with Firefox and Chrome on PC Win11).
Is this something only my instance has or is it a general problem?

Example for the error :

Erstellen der Leseansicht des Buchs fehlgeschlagen
Konnte Aria nicht öffnen. Beim Bearbeiten des Buchs ist ein Fehler aufgetreten, clicke "Zeige Details" für mehr Informationen
Traceback (most recent call last):
File "calibre\srv\books.py", line 127, in job_done
PermissionError: [WinError 32] Der Prozess kann nicht auf die Datei zugreifen, da sie von einem anderen Prozess verwendet wird: '\\\\?\\C:\\Users\\andre\\AppData\\Local\\calibre-cache\\srvb\\s\\6s7yxa0x' -> '\\\\?\\C:\\Users\\andre\\AppData\\Local\\calibre-cache\\srvb\\f\\c2b92f2c0a8098e8507cc4bd16ea8cf07c 6a087d'

My translation: The process can not access the file, since it is used by an other process.

BTW. The download of the files and opening in an external bookviewer works fine.

kovidgoyal · 04-14-2025, 09:39 PM

Something on your computer is interfering with calibre typically filesync or antivirus programs, try rebooting in safe mdoe and see if the problem goes away to confirm.

Andreas · 04-15-2025, 09:13 AM

Sorry but I could not test it.
After I started PC in safe mode, I could start calibre but not the content server (no socket).

kovidgoyal · 04-15-2025, 09:21 AM

Start in safe mode with networking

Andreas · 04-15-2025, 10:03 AM

Ok, found the option. So I did "safe mode with network" restart.
started calibre, started content server (worked) BUT if I press "read" for CBZ or CBR I get the same error as before (process access to file).

I found another PC with Win 11 and did a short test there, with the same result.

I can see, that the directory in the errormessage contains the imagefiles from the CBZ unpacked. I also can access them with the file explorer. So perhaps a timing error?

04-14-2025, 01:31 PM	#1
Andreas Member Posts: 20 Karma: 10 Join Date: Oct 2008 Device: Kindle / Smartphone / Tablet	Content Server Problem Read of CBZ/CBR I like the content server and also to use the "read" option, that works good for books like epub. But I would like to use it also with Comics in CBZ or CBR. But this formats always display an error, that is not dependent on the Browser I use (Tested with samsung Internet and Chrome on Android and with Firefox and Chrome on PC Win11). Is this something only my instance has or is it a general problem? Example for the error : Erstellen der Leseansicht des Buchs fehlgeschlagen Konnte Aria nicht öffnen. Beim Bearbeiten des Buchs ist ein Fehler aufgetreten, clicke "Zeige Details" für mehr Informationen Traceback (most recent call last): File "calibre\srv\books.py", line 127, in job_done PermissionError: [WinError 32] Der Prozess kann nicht auf die Datei zugreifen, da sie von einem anderen Prozess verwendet wird: '\\\\?\\C:\\Users\\andre\\AppData\\Local\\calibre-cache\\srvb\\s\\6s7yxa0x' -> '\\\\?\\C:\\Users\\andre\\AppData\\Local\\calibre-cache\\srvb\\f\\c2b92f2c0a8098e8507cc4bd16ea8cf07c 6a087d' My translation: The process can not access the file, since it is used by an other process. BTW. The download of the files and opening in an external bookviewer works fine.

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04-14-2025, 09:39 PM	#2
kovidgoyal creator of calibre Posts: 45,139 Karma: 27110892 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Something on your computer is interfering with calibre typically filesync or antivirus programs, try rebooting in safe mdoe and see if the problem goes away to confirm.

04-15-2025, 09:13 AM	#3
Andreas Member Posts: 20 Karma: 10 Join Date: Oct 2008 Device: Kindle / Smartphone / Tablet	Sorry but I could not test it. After I started PC in safe mode, I could start calibre but not the content server (no socket).

04-15-2025, 09:21 AM	#4
kovidgoyal creator of calibre Posts: 45,139 Karma: 27110892 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Start in safe mode with networking

04-15-2025, 10:03 AM	#5
Andreas Member Posts: 20 Karma: 10 Join Date: Oct 2008 Device: Kindle / Smartphone / Tablet	Ok, found the option. So I did "safe mode with network" restart. started calibre, started content server (worked) BUT if I press "read" for CBZ or CBR I get the same error as before (process access to file). I found another PC with Win 11 and did a short test there, with the same result. I can see, that the directory in the errormessage contains the imagefiles from the CBZ unpacked. I also can access them with the file explorer. So perhaps a timing error?

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