Calibre 8.0 not starting on Mac M1

[redlob]

Hi kovidgoyal, congrats with version 8!

I would really like to upgrade, but this version won't start on my Mac M1. As soon as I click the icon, it bounces for a short time and then it quits.

If you need anything to troubleshoot let me know.

Thanks!

[kovidgoyal]

Run

/Applications/calibre.app/Contents/MacOS/calibre-debug -g

in Terminal.app and post the output

[redlob]

here you go:

Spoiler:

calibre 8.0 embedded-python: True
macOS-15.3.2-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '24.3.0', 'Darwin Kernel Version 24.3.0: Thu Jan 2 20:24:06 PST 2025; root:xnu-11215.81.4~3/RELEASE_ARM64_T8103')
Python 3.11.5
OSX: ('15.3.2', ('', '', ''), 'x86_64')
Interface language: None
EXE path: /Applications/calibre.app/Contents/MacOS/calibre-debug
Traceback (most recent call last):
File "runpy.py", line 198, in _run_module_as_main
File "runpy.py", line 88, in _run_code
File "site.py", line 42, in <module>
File "site.py", line 38, in main
File "calibre/debug.py", line 241, in main
File "calibre/gui_launch.py", line 69, in calibre
File "calibre/debug.py", line 184, in print_basic_debug_info
File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
File "bypy-importer.py", line 279, in exec_module
File "calibre/customize/ui.py", line 840, in <module>
File "calibre/customize/ui.py", line 789, in initialize_plugins
File "calibre/customize/ui.py", line 96, in disable_plugin
ValueError: No plugin named: KoboTouchExtended found

[Grins]

Had the same problem on macOS 15.3.2 on a MacPro M1:

I just deleted the (user installed) plugin "KoboTouchExtended" and restarted calibre. Then everything was fine and calibre 8.0 was running happily.

[redlob]

Did you remove it from ~/Library/Preferences/calibre/plugins? Because I just did that but still won't start

[Grins]

I used the functionality inside calibre:

Preferences -> Plugins -> (select plugin) -> Remove plugin

[Grins]

Sorry, I forgot to mention a rather important addition:

After the crash I installed the previous version (7.26) of calibre.
Then I deleted the plugin as mentioned above.
And finally I installed 8.0 and it was fine.

Again, sorry for the confusion

[redlob]

Ah! That was it! All working now Thanks Grins and kovidgoyal!

[Joerg_Mosthaf]

Originally Posted by Grins

Sorry, I forgot to mention a rather important addition:

After the crash I installed the previous version (7.26) of calibre.
Then I deleted the plugin as mentioned above.
And finally I installed 8.0 and it was fine.

Again, sorry for the confusion

Same thing worked on a Windows 11 (Enterprise) install. Calibre 8.0.0 didn't run, I uninstalled, installed 7.26 and removed the Kobo Touch Extended Plugin and then updated to 8.0.0 successfully
debug output:

C:\Program Files\Calibre2>calibre-debug -g
calibre 8.0  embedded-python: True
Windows-10-10.0.22631-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.22631')
Python 3.11.5
Windows: ('10', '10.0.22631', 'SP0', 'Multiprocessor Free')
Interface language: de
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
Traceback (most recent call last):
  File "runpy.py", line 198, in _run_module_as_main
  File "runpy.py", line 88, in _run_code
  File "site.py", line 83, in <module>
  File "site.py", line 78, in main
  File "site.py", line 50, in run_entry_point
  File "calibre\debug.py", line 241, in main
  File "calibre\gui_launch.py", line 69, in calibre
  File "calibre\debug.py", line 184, in print_basic_debug_info
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "bypy-importer.py", line 279, in exec_module
  File "calibre\customize\ui.py", line 840, in <module>
  File "calibre\customize\ui.py", line 789, in initialize_plugins
  File "calibre\customize\ui.py", line 96, in disable_plugin
ValueError: No plugin named: KoboTouchExtended found

[kovidgoyal]

Released 8.0.1 with the fix