Quote:
Originally Posted by FLeCos
I have W10 and Calibre 5.6 The Calibre editor and viewer does not show me the content of the book. They will open but only a blank window is displayed.
Greetings and thanks in advance
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Are you running Calibre on a laptop with dual video cards? If so, switch Calibre to run with the other video card. I gave this same advice to someone else and it solved the same problem.