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Old 02-21-2016, 11:33 PM   #6
eschwartz
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Join Date: Nov 2012
Location: The Beaten Path, USA, Roundworld, This Side of Infinity
Device: Kindle Touch fw5.3.7 (Wifi only)
Quote:
Originally Posted by BetterRed View Post
Crikey! What type of CPU are you running!

Perhaps you could install (if necessary) something like Piriforms Speccy and post a screen shot of what it displays for the CPU. IIRC lack of support for the SS3 instruction set was the Qt5 'gotcha'.

BR
SSE2 was the gotcha. Any Intel CPU produced after 2001 (or AMD after 2003) should be capable of it -- and SSE2 is a requirement to install Windows 8.

(And technically, SSE2 is just commonly missing on WinXP, but Qt5 doesn't support XP for other reasons too. In fact, you can custom-build Qt5 without SSE2 although it runs slower.)

...

@baggins41,

As the master said, this problem usually indicates an overzealous antivirus. But I suppose a more definite way to find out would be to run calibre in debug mode. On the command line, type:
Code:
calibre-debug -g
Then try to open a book in the viewer/editor.

Hopefully a useful error message will show up.
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