Bug or not???

[Mario]

Hello,

Im new to Calibre and im not sure if this is a bug.

Sometimes i get the folowing message:

unable to open database file

Traceback (most recent call last):
  File "site-packages\calibre\gui2\device.py", line 87, in run
  File "site-packages\calibre\gui2\device.py", line 503, in _books
  File "site-packages\calibre\devices\kobo\driver.py", line 1683, in books
OperationalError: unable to open database file

And i'm unable to see the books on my Kobo Glo HD in Calibre.

Am i doing something wrong, or is this a problem in Calibre?

Best regards,

Mario

Calibre version 2.51.0
Windows 7 32bit

[Kovid Goyal (kovid)]

Changing the component for this bug.

 assignee davidfor
 tag kobo-driver
 status triaged

[David Forrester (davidfor)]

That error usually means that the database on the device is corrupt. You can test this with the Kobo Utilities plugin. This has a function to check the database. Or, any SQLite database management application will have a method to do this.

Unless you have a backup of the database, the fix is to sign out of the Kobo account on the device. This will create a new database and take you through the set up again. Unfortunately, you will lose the current reading status of any sideloaded books.