Problem changing info of ebooks

[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

[kovidgoyal]

Something on your computer is preventing calibre from opening its database file. Common causes are antivirus programs and file sync programs like dropbox. It can also happen if you place your calibre library on a networked library or an external disk with a non-native filesystem.