[howardgo]

I buy my books in many different locations and use Calibre to remove the DRM for my own backup purposes and to read them on KOReader. Recently, I have two books that KOReader will not open.

They both appear in the list of books. One looks normal but only has a blank page. Going to the next page brings up the end of book dialog. The other book just shows a message that the epub has an error instead of a book title. Both of these books open in Calibre and on the native Kobo side of my Kobo Aura One.

Does anyone know how I can troubleshoot the issue with these two epubs so I can read them on KOReader?