04-25-2011 09:38 AM - edited 04-25-2011 10:27 AM
Not sure if it is known, but I could not upload my cover image AFTER I had uploaded my eBook file. I received an error message that said my cover image was not the proper pixel size. (Even though I knew it was.)
The fix: I started over, and uploaded my cover image first, then uploaded my eBook file.