i have a sony reader prs 600 and i recently downloaded a book frome ebooks.com. I am new at this so I apologize if I am missing something obvious but I can't figure out why the book I bought shows up blank except for the front page which is a picture. After that there is 816 blank pages. It shows up this way on both reader library and digital editions. Does anyone know what I have to do to fix this? thank you.