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Old 08-28-2015, 07:00 AM   #11
BetterRed
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Posts: 21,752
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Join Date: Mar 2012
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Quote:
Originally Posted by steve2112 View Post
Thanks everyone for your prompt replies.

I've tried switching off my AV (360) and that doesn't change it. Following BR's advice I find I CAN open an epub file directly with the viewer - does that help identify the problem? (I'm still looking into the TEMP folder permission thing theducks mentioned.)
@steve2112 - suggests to me that its not permissions on library directories, or program files or for that matter TEMP - because the viewer creates folders in TEMP. Suggests to me the gremlins are associated with the library manager GUI - other than that I know nothing.

Only Kovid can make an informed comment

One thing you could do, so as to put the TEMP/AV issue to bed, is to give Calibre a dedicated temporary location via the CALIBRE_TEMP_DIR environment variable, see ==>> Environment variables. And exclude that location from your AV, and Indexing and any other such boondoggles.

Another thing worth trying is to see what happens when you run calibre in Windows Safe Mode (if you've not already done that), and if its ON try turning UAC OFF.

And try installing portable calbre

BR
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