And strangely enough, I just tried to open (successfully) Calibre on my desktop system. Not sure what is going on with my laptop causing the incompatibility, but it works fine on my desktop. I have updated to 7.19, still works fine. Thought (since I saw other posts suggesting the same) that it may be my graphics driver so I updated my desktop driver after I confirmed 7.19 was working, but it still worked after updating that driver as well, so it doesn't seem to be a conflict there. Both systems use the same AV program, so I guess that's not it either.
Running calibre-debug on the desktop system results in this output:
calibre 7.19 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: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
QPA platform: windows
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 69.86819484240687 x 69.80152671755725
ApplicationPaletteChange event ignored
Using calibre Qt style: True
Anyway, I appreciate your taking the time to offer some suggestions Kovid Goyal. I'll continue trying to figure out what is different between the two systems that is causing the issue.
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