Quote:
Originally Posted by llasram
You should only get that that error when the file isn't actually an EPUB book at all, DRMed or not. Are you sure the file is in fact an EPUB book?
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well, the file extension is ".epub". After installing Adobe DE, the file extenstion ".epub" has been associated with this program. Other files open inside Adobe DE.
I am not sure how to check if the file is indeed an epub document. Any suggestions?