[Veerle]

Hello there,

I am using Calibre since quite some time. Only recently I encoutered a problem. I have been adding many books I received as a birthdaypresent. I noticed some titles were wrong and some books were in the list twice or more. So I started to organise all the books, correcting the titles, the author, adding labels,... etc. All of a sudden I couldn't make any changes anymore. When I tried to change the title, the author or whatever, I received a note that said 'I cannot change the data'. When I clicked on 'show details' I got this:
calibre, version 2.24.0
FOUT: Kan de data niet wijzigen: Kan de data niet wijzigen. Klik "Toon Details" om te zien waarom.

Traceback (most recent call last):
File "site-packages\calibre\gui2\library\models.py", line 1046, in setData
File "site-packages\calibre\gui2\library\models.py", line 1120, in _set_data
File "site-packages\calibre\db\legacy.py", line 435, in set
File "site-packages\calibre\db\cache.py", line 57, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 1037, in set_field
File "site-packages\calibre\db\write.py", line 513, in set_books
File "site-packages\calibre\db\write.py", line 187, in set_title
File "site-packages\calibre\db\write.py", line 178, in one_one_in_books
File "site-packages\calibre\db\backend.py", line 816, in executemany
File "c:\cygwin64\home\kovid\sw\build\apsw-3.8.2-r1\src\cursor.c", line 231, in resetcursor
CantOpenError: CantOpenError: unable to open database file

When I double cick a book to open it, I get the message that the program cannot open the databse file.
When I click on open details:
calibre, version 2.24.0
FOUT: Niet afgehandelde fout: <b>CantOpenError</b>:CantOpenError: unable to open database file

calibre 2.24 [64bit] isfrozen: True is64bit: True
Windows-7-6.1.7601-SP1 Windows ('64bit', 'WindowsPE')
('Windows', '7', '6.1.7601')
Python 2.7.9
Windows: ('7', '6.1.7601', 'SP1', 'Multiprocessor Free')
Successfully initialized third party plugins: DeDRM
Traceback (most recent call last):
File "site-packages\calibre\gui2\actions\view.py", line 225, in view_triggered
File "site-packages\calibre\gui2\actions\view.py", line 301, in _view_books
File "site-packages\calibre\gui2\actions\view.py", line 260, in _view_calibre_books
File "site-packages\calibre\gui2\actions\view.py", line 102, in view_format_by_id
File "site-packages\calibre\gui2\actions\view.py", line 275, in update_history
File "site-packages\calibre\db\cache.py", line 57, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 581, in set_pref
File "site-packages\calibre\db\backend.py", line 126, in set
File "site-packages\calibre\db\backend.py", line 122, in __setitem__
File "site-packages\calibre\db\backend.py", line 804, in execute
File "c:\cygwin64\home\kovid\sw\build\apsw-3.8.2-r1\src\cursor.c", line 231, in resetcursor
CantOpenError: CantOpenError: unable to open database file


It is this way for every book now.
I just installed the latest update, but the problem is still there...
What should I do to solve this?

Thanks!
Veerle