Quote:
Originally Posted by Blue2u
The first error happened when I restored a backup of a calibre library.
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Restored from where? What software did you use to do the backup/restore? You need to be explicit.
Calibre doesn't have a specific library backup and restore feature. Some people use the
Save to Disk tool for backup and
Add Books for restore, others use the
Library->Export/import all calibre data tool for backup/restore, and others use third party tools.
BR