Thread: Calibre 64 bit error message when deleting book
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Old 01-17-2021, 08:00 PM   #7
JSWolf
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In order to do away with the error and be able to use your library, you will need to install Calibre 5.x or Calibre 4.23. When you installed Calibre 5, the data was changed. The only version before 5 that is compatible with Calibre 5's new database format is Calibre 4.23.
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