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Old 10-18-2020, 07:40 PM   #15
johnoz123
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johnoz123 began at the beginning.
 
Posts: 29
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Join Date: Sep 2010
Device: Kindle Voyage
@kovidgoyal (FYI)

I had a similar issues with a Macbook and an iMac MacOS 10.15.7 + Calibre 5.* I reverted to
Calibre 4.23 and it fix the problem.

The problem: Calibre not opening after update but opening later after 2 - 3 attempts. Once opened it reopened okay but failed to open when I clicked on an epub or awz file. It would start to open and then stop (close)
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