Error message: Following books are virtual
When trying to import books from my Kobo Glo into the Calibre Library, I get a message that says, "The following books are virtual and cannot be added to the calibre library." I can't find any reference in the help to that message. What does it mean? The books are on the device; I can read them there without difficulty. They are purchased Kepub (Kobo ePub) copies, direct from the Kobo online bookstore. Thanks!
|