Issue with version greater 2.56

[aCIDsLAM]

Hello People,

i am running Calibre Server 2.56 on a Windows 2012 R2 Core Server.

With newer version greater 2.56, i get following message below.

Somebody else with this setup have simular problems?

PS C:\Program Files\Calibre2> .\calibre-server.exe
Python function terminated unexpectedly
cannot import name QImage (Error Code: 1)
Traceback (most recent call last):
File "site.py", line 132, in main
File "site.py", line 108, in run_entry_point
File "site.py", line 50, in load_module
File "site-packages\calibre\library\server\main.py", line 12, in <module>
File "site.py", line 50, in load_module
File "site-packages\calibre\library\server\base.py", line 21, in <module>
File "site.py", line 50, in load_module
File "site-packages\calibre\library\server\content.py", line 14, in <module>
File "site.py", line 50, in load_module
File "site-packages\calibre\utils\img.py", line 10, in <module>
ImportError: cannot import name QImage

[BetterRed]

Version 2.57 (May 20) replaced the imagemagik library with an equivalent Qt library - see calibre - What's new - the error suggests it's something to do with that change?

But wouldn't have thought that would effect calibre server. I run 3 instances of calibre-server on a desktop Windows box with no issues.

Kovid Goyal will have to answer this, answers to these questions may be of some use.

Can you run the calibre library manager? Do you have any other tasks running that might be in conflict? Can you try terminating those tasks.

BR

[kovidgoyal]

Something is preventing the Qt dlls being loaded on your system. You might get a better error message with this command.

calibre-debug -c "from PyQt5.QtGui import QImage"

[aCIDsLAM]

I have no other services or applications running. I installed a core server, as i wanted a dedicated windows machine with low footprint.

Maybe the library changed caused a gui server depency. I tried the latest release, even with the debug version with the --new server

Strange, the debugout with 2.56 and 2.69 is the same but with 2.56, i still can start the server with 2.56


Version 2.69 output
PS C:\Program Files\Calibre2> calibre-debug -c "from PyQt5.QtGui import QImage"
Python function terminated unexpectedly
MemoryLoadLibrary() failed loading PyQt5\QtGui.pyd (Error Code: 1)
Traceback (most recent call last):
File "site.py", line 132, in main
File "site.py", line 109, in run_entry_point
File "site-packages\calibre\debug.py", line 238, in main
File "<string>", line 1, in <module>
File "site.py", line 60, in load_module
ImportError: MemoryLoadLibrary() failed loading PyQt5\QtGui.pyd

Version 2.56 output (But Server works)
PS C:\Program Files\Calibre2> calibre-debug -c "from PyQt5.QtGui import QImage"
Python function terminated unexpectedly
MemoryLoadLibrary() failed loading PyQt5\QtGui.pyd (Error Code: 1)
Traceback (most recent call last):
File "site.py", line 132, in main
File "site.py", line 109, in run_entry_point
File "site-packages\calibre\debug.py", line 234, in main
File "<string>", line 1, in <module>
File "site.py", line 60, in load_module
ImportError: MemoryLoadLibrary() failed loading PyQt5\QtGui.pyd

[kovidgoyal]

Yes, from >2.56 Qt is used for image resizing operations, which the server needs. I suggest you stay with 2.55 until calibre 3.0 -- in calibre 3.0 I have gotten rid of the MemoryLoadLibrary() hack to load python modules, so you should no longer get that error.

[aCIDsLAM]

Okay. Atleast i know, 2.56 is not a dead end, with my setup 2012 R2 core server setup and i can update in the future some day.

Thanks for you help and support.