I occasionally side load books (primarily pubs) onto my Vox using the Calibre programme, and when I do, I always make sure cover images are included and (now at least) properly embedded (using an epub to epub conversion). However, I have encountered an odd problem - surprisingly often, these cover images are displayed on the virtual library shelves when the books are imported but then do not appear on the actual cover page when the book is actually opened. Instead you are presented with a blank rectangle.
Has anyone else encountered this quirk, or have any suggestions as to what may be causing it?