Calibre Crashing at start up
I have been using Calibre for years without ever experiencing any problems. That is until last week. Calibre crashes whenever I start the program. I have looked for viruses, installed the 64-bit version. I was running the 32-bit first and installed an older version to see if that helped. To date, nothing has helped. If anyone has any suggestions please let me know. I am including the error message files.
Thanks
Chuck
calibre, version 3.33.1
ERROR: Startup error: There was an error during calibre startup. Parts of calibre may not function. Click Show details to learn more.
Traceback (most recent call last):
File "site-packages\calibre\gui2\main.py", line 289, in initialize_db_stage2
File "site-packages\calibre\gui2\main.py", line 233, in start_gui
File "site-packages\calibre\gui2\ui.py", line 436, in initialize
File "site-packages\calibre\gui2\init.py", line 771, in save_layout_state
File "site-packages\calibre\gui2\library\views.py", line 636, in save_state
File "site-packages\calibre\gui2\library\views.py", line 630, in write_state
File "site-packages\calibre\db\cache.py", line 63, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 617, in set_pref
File "site-packages\calibre\db\backend.py", line 134, in set
File "site-packages\calibre\db\backend.py", line 130, in __setitem__
File "site-packages\calibre\db\backend.py", line 845, in execute
File "c:\t\t\apsw-j1n8vs\apsw-3.23.1-r1\src\cursor.c", line 236, in resetcursor
CantOpenError: CantOpenError: unable to open database file
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