Originally Posted by ixtab
Hmm... I'm afraid that I don't know what is going on there. Do you see the covers for books downloaded from Amazon? Do you see the "cover" for JBPatch? If so, then you're probably doing something wrong (but I don't know what). Otherwise, please check the log files (the JBPatch log, and possibly the system log) and report back if you find anything unusual.
Unfortunately it happens also with books from Amazon, but there is cover for JBPatch.
Hmm... how to say... everything in the log files seems unusual for me
EDIT: I've just tried one more thing. I sent a file directly to the Kindle (without Calibre) and it works. Do you know is there any problem with Calibre? Is there any setting which could be responsible for this problem?