Quote:
Originally Posted by BetterRed
Try running the viewer directly from C:\Program Files\Calibre2\ebook-viewer.exe and opening an epub via the file open button (3rd button)?
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I tried that, no change.
Quote:
Originally Posted by BetterRed
If that doesn't work, try installing calibre portable somewhere, and see if you can read the Quick Start Guide.
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The current portable version still does not work. I went back and tried with older portable versions, 3.5.0 and older work, 3.6.0 and newer do not. I am still testing.
Edit, all Calibre versions tested working in a Windows 10 1809 VM and in a Windows 10 1803 so this is probably a windows configuration problem.