Originally Posted by JSWolf
A database corruption can happen with a perfectly working device. If could an improper eject. It could be the USB cable came out of the device before being ejected. It could be a problematic USB cable. Do the log out and log back in and that will recreate the database. After you've done this, setup Kobo Utilities in calibre to backup the database so if this ever happens, you can copy the last backed up database to your Kobo.
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