Are you using the same software you used to create the other epubs, the ones that show up fine ? Same version, same settings, same everything ? Then edit them with Sigil and try to work out what you did right for the older epubs and what you did wrong (or forgot to do) in the newer ones. The covers are the same format ? Not JPEG2000 or some other random obscure format.
It can't be the reader's fault if the epubs are identical to the older epubs but have you updated the reader lately ?
Last edited by DSpider; 05-28-2011 at 05:30 AM.
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