Calibre & Kobo not communicating

[FoxyLady]

I have the Kobo Clara color, which is nearly 3 years old.
A few days ago while sorting books Calibre stated Error communicating with device...
calibre, version 9.8.0
ERROR: Error: Error communicating with device

database disk image is malformed

Traceback (most recent call last):
File "calibre\gui2\device.py", line 110, in run
File "calibre\gui2\device.py", line 581, in _books
File "calibre\devices\kobo\driver.py", line 2092, in books
File "C:\t\t\apsw-qgwg0sj1\src\cursor.c", line 219, in resetcursor
apsw.CorruptError: database disk image is malformed
----
After trying various things I saw somewhere suggest to sign out then sign back in which will reset the database. Of course I lost all my books and the sync wouldn't restore them all (no idea how that sync button works!).

But, Calibre could then communicate with kobo and I started sending my books to the device. Had a couple of problems along the way but most were added easily.

I have been adding some more books this morning ok, but after reconnecting kobo I suddenly get the 'Error communicating with device' again.

Can anybody help fix this? I don't want to sign out, lose all books, add books only to have it happen again in a couple of days.

[JSWolf]

Do you have a backup of the database? If not, you will have to sign out.

If you don't have a backup, setup Kobo Utilities to make backups of your database when you connect to calibre.

[FoxyLady]

Originally Posted by JSWolf

Do you have a backup of the database? If not, you will have to sign out.

If you don't have a backup, setup Kobo Utilities to make backups of your database when you connect to calibre.

I haven't seen anything about being able to backup the kobo. Nor do I understand how the sync button works.

How do you backup the database? I can't see anything about Kobo Utilities on the device.

I do, of course, have all my books on my computer and added to Calibre.

I'm just a bit concerned about signing out yet again, only to have the error recur a third time.

[JSWolf]

Originally Posted by FoxyLady

I haven't seen anything about being able to backup the kobo. Nor do I understand how the sync button works.

How do you backup the database? I can't see anything about Kobo Utilities on the device.

I do, of course, have all my books on my computer and added to Calibre.

I'm just a bit concerned about signing out yet again, only to have the error recur a third time.

Are you on the latest firmware? Do you make sure you properly eject from the computer?

Have a read of the Kobo Utilities plugin thread. https://www.mobileread.com/forums/sh...d.php?t=366110

Also, with Kobo Utilities, you can keep track of your reading positions in case you ever do have to start over or restore the database.

[bluepeter]

Originally Posted by FoxyLady

How do you backup the database? I can't see anything about Kobo Utilities on the device.

You won't. Kobo Utilities is a plugin for Calibre, not anything produced by Kobo. Open Calibre, go to Preferences > Plugins > Get new plugins, then search for Kobo Utilities and instal it.

[FoxyLady]

Thanks folks. I have installed Kobo Utilities and will try again.