Hi, I'm a frequent and loyal user of Calibre.
Unfortunately, I ran into this problem and do not know what is the cause.
On the bottom left corner (beside Calibre version number), there is a number indicating the number of books in the current library.
(Let's call this Number X. )
When I click "library metadata backup status" and "queue all books for backup", the number of remaining books to be backed up is more than the number mentioned above.
(Let's call this Number Y. )
My first thought is that:
Number Y takes into account multiple formats. But checking using another library, it is not true. (the other library has books with multiple formats, but when i queue all books for backup, number x = number y.
I have run "check database" multiple times with no problems.
I have also used the calibre portable version (to eliminate possible issues with my local installation) but get the same results.
What could be the reason?
Thank you for any help!