I just purchased my PRS-600 yesterday, so I'm still familiarizing myself with it. I've added some ePubs that I created myself in Sigil with success, but for some reason one ePub will not open on the reader. I can view it in Calibre just fine. When I ran it threw the ePub validator over at ThreePress Consulting it comes out valid, but with the error "/Text/content003.xhtml: file is over 300k in size." Do I need to divide that chapter into smaller portions, or could there be something else happening here? Is there some sort of size limit I'm not aware of? I would appreciate your help in figuring out what is happening here.
