calibre 4.6 to 4.8 error with files

[markbnj]

running win/10 home 64 bit

Get the following error messages..
notes:

had version 4.6 32 bit, copied database and uninstalled
had version 4.7 64 bit, copied database and uninstalled

reinstalled version 4.8 64 bit, got same error above.

calibre, version 4.8.0
ERROR: Errors while adding: Failed to add any books, click "Show details" for more information


----------------------------------------------------------------------
Failed to add the book: Rich People Problems
M:\media\movies\plex\books\kwan\Rich People Problems-Kwan 2017 (WWT).epub
With error:
Traceback (most recent call last):
File "site-packages\calibre\gui2\add.py", line 414, in add_book
File "site-packages\calibre\db\legacy.py", line 225, in create_book_entry
File "site-packages\calibre\db\cache.py", line 62, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 1580, in create_book_entry
File "site-packages\calibre\db\backend.py", line 874, in execute
File "c:\t\t\apsw-nhrdandw\src\cursor.c", line 236, in resetcursor
CantOpenError: CantOpenError: unable to open database file


notes:

had version 4.4 32 bit, copied database and uninstalled
had version 4.7 64 bit, copied database and uninstalled

reinstalled version 4.8 64 bit, got same error above.

[JSWolf]

It sounds like a corrupt database. I suggest you do a Restore database. It's found when you right click the database icon and select Library Maintenance and then Restore database. It rebuilds the database using the information found in the file metadata.opf in each book's directory.

[kovidgoyal]

Something is blocking calibre from opening its databse, typical culprits are antivirus and filesync programs. Excludethe calibre library folder from these and you should be fine.

[BAG777]

Originally Posted by JSWolf

It sounds like a corrupt database. I suggest you do a Restore database. It's found when you right click the database icon and select Library Maintenance and then Restore database. It rebuilds the database using the information found in the file metadata.opf in each book's directory.

I tried RESTORING DB, restore successful, problem still exists.

I turned off Norton antivirus, problem still exists.

I killed Allway Sync (file backups), problem still exists.

Thanks for helping!

[BetterRed]

Try running in Windows Safe Mode, if that works then another start up task is blocking calibre. An orderly process of elimination such as a binary chop is the best way to find it.

BR

[BAG777]

Originally Posted by BetterRed

Try running in Windows Safe Mode, if that works then another start up task is blocking calibre. An orderly process of elimination such as a binary chop is the best way to find it.

BR

Rebooted into Win10-64 SAFE mode w networking
Same error
Ugh

I appreciate your help!

This used to work flawlessly :-)

[BAG777]

Originally Posted by kovidgoyal

Something is blocking calibre from opening its databse, typical culprits are antivirus and filesync programs. Excludethe calibre library folder from these and you should be fine.

I booted into SAFE mode with networking, same error.

kovidgoyal any ideas? I don't know what else to try.

[JSWolf]

Originally Posted by BAG777

I booted into SAFE mode with networking, same error.

kovidgoyal any ideas? I don't know what else to try.

You can try running Calibre 4.8 from the command line with the following command calibre --ignore-plugins

That will disable all plugins and you can test if Calibre is working. If it is, then it's something to do with the plugins. From there you can run Calibre normally and disable the plugins one-by-one until you find which one is the problem.

[BAG777]

Originally Posted by JSWolf

You can try running Calibre 4.8 from the command line with the following command calibre --ignore-plugins

That will disable all plugins and you can test if Calibre is working. If it is, then it's something to do with the plugins. From there you can run Calibre normally and disable the plugins one-by-one until you find which one is the problem.

Tried cmd calibre --ignore-plugins
Same error
Rebooted into safe mode
Tried cmd calibre --ignore-plugins
Same error

Thanks again for your help/suggestions

[BetterRed]

Try installing portable, you can leave the existing install as it is. Portable is completely self contained - if it has the same problem then

BR

[JSWolf]

Originally Posted by BetterRed

Try installing portable, you can leave the existing install as it is. Portable is completely self contained - if it has the same problem then

BR

There is a problem with your graphic. Please fix and repost. Thanks.

[BAG777]

I installed calibre portable on my local D drive and it SUCCESSFULLY added the book

I tried again with my non-portable calibre, same error, can't open DB

I'm not sure what you mean there is an error with my graphic.

What does this "test" tell us? Note that my calibre db is on an NAS (Synology), always has been for years, and always worked. Not sure if that is relevant. NAS working fine but curiously the file dates for the calibre data db show 3/8/2091.

Thoughts?

[kovidgoyal]

https://manual.calibre-ebook.com/faq...rked-drive-nas

[BAG777]

Originally Posted by kovidgoyal

https://manual.calibre-ebook.com/faq...rked-drive-nas

THANKS!

I moved my calibre db folder from my NAS to my local D drive and all is working fine now! Most excellent!

Sorry I didn't realize the issues with db on NAS. Wonder why that never caused a problem before now.

Much appreciate everyone's help!

Happy New Year/Decade!

[theducks]

Originally Posted by BAG777

Sorry I didn't realize the issues with db on NAS. Wonder why that never caused a problem before now.

Much appreciate everyone's help!

Happy New Year/Decade!

That is the most common issue: Fragile. It takes only a little to change from 'I get away with a NAS' to WHAT the heck is going on!

FWIW Everyone should make it a habit of visiting the FAQ pages regularly (if you use a default install) and Frequently, if you like to change things up.