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Old 10-29-2021, 03:41 AM   #8
rhyta
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Posts: 68
Karma: 301388
Join Date: Sep 2017
Location: West Valley City UT
Device: Nook Glowlight 4 Pearl Pink, ST Nook w/Glowlight (2)
Quote:
Originally Posted by ownedbycats View Post
Make sure to backup your metadata.db; there's some changes to the database structure and reverting to an older Calibre after it upgrades tends to cause errors.

I also suggest backing up the plugins folder from appdata; sometimes getting older versions of plugins is tricky.

Then upgrade. Don't be surprised if some of your plugins seem to disappear - chances are they just failed to load and got deactivated because they're outdated. Just re-download the newest version.
Are these on the Calibre software? (metadata and app data)
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