The epub version of my book passes its EPUB check without any issues, but Smashwords has issues with it because apparently my Manifest is incomplete. Some additional XHTML stuff is needed if it is to be accepted into the Apple iBook store. I'm not sure what the issue is really because I know very little about the behind the scenes coding in InDesign. Thus I don't know how to tackle the problem. I expected InDesign to do all this for me! Any simple to implement ideas would be greatly appreciated.