Quote:
Originally Posted by BetterRed
Or someone tweaked the calibre's View->View specific format->Open EPUB With to reference edit-ebook.exe.
Or someone unchecked EPUB from the Preferences->Behaviour->Use internal viewer for list and used Windows Open With to associate EPUB with ebook-edit.exe.
'T' and 'V' are not readily mis-keyed.
BR
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Not use Internal viewer (and the OS was set to edit)

Brilliant detective work. Make a lot more sense than fumble fingers T or V