Quote:
Originally Posted by davidfor
@sheldon_es: I tried the book you sent me and had no errors with either a conversion or using the extended driver. It feels like something external interfering, but, I have no idea what. The obvious culprit would be anti-virus or anti-malware.
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It could be an aggressive temp file cleaner. I think that some work by watching for changes then deleting things when they don't change, depending on locking to prevent breakage. Running calibre in safe mode could help find the culprit or at least verify the "something external" theory.