Also, if this is helpful, I ran debug.
Here is the (spoiler, thanks!) output:
Spoiler:
calibre 5.40 embedded-python: True is64bit: True
macOS-10.16-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '21.4.0', 'Darwin Kernel Version 21.4.0: Fri Mar 18 00:46:32 PDT 2022; root:xnu-8020.101.4~15/RELEASE_ARM64_T6000')
Python 3.8.5
OSX: ('10.16', ('', '', ''), 'x86_64')
Interface language: None
devicePixelRatio: 2.0
logicalDpi: 72.0 x 72.0
physicalDpi: 127.50000191485789 x 127.50000191485789
Using calibre Qt style: True
[0.00] Starting up...
[0.02] Showing splash screen...
[0.20] splash screen shown
[0.20] Initializing db...
[0.24] db initialized
[0.24] Constructing main UI...
Traceback (most recent call last):
File "calibre/db/fields.py", line 583, in book_value_map
File "calibre/db/fields.py", line 583, in <dictcomp>
File "calibre/db/fields.py", line 583, in <genexpr>
KeyError: 'EPUB'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "calibre/gui2/library/views.py", line 1017, in database_changed
File "calibre/gui2/library/views.py", line 873, in restore_state
File "calibre/gui2/library/views.py", line 776, in apply_state
File "calibre/gui2/library/views.py", line 721, in apply_sort_history
File "calibre/gui2/library/views.py", line 605, in sort_by_named_field
File "calibre/gui2/library/views.py", line 564, in sort_by_column_and_order
File "calibre/gui2/library/models.py", line 514, in sort
File "calibre/gui2/library/models.py", line 522, in _sort
File "calibre/db/view.py", line 266, in incremental_sort
File "calibre/db/view.py", line 250, in multisort
File "calibre/db/view.py", line 245, in _do_sort
File "calibre/db/cache.py", line 74, in call_func_with_lock
File "calibre/db/cache.py", line 1028, in multisort
File "calibre/db/fields.py", line 586, in book_value_map
calibre.db.fields.InvalidLinkTable: languages
zsh: abort /Applications/calibre.app/Contents/MacOS/calibre-debug -g