A couple of weeks back we had a new release of the epub validation tool as the old one was not validating documents properly. epubcheck-1.0.3 was released to fix the XMLParser as it was not allowing multiple validators to be added.
The error was first realised by Jon Noring who noticed that Adobe’s “page-map” attribute extension, which is used in the NCX , was being validated incorrectly. This extended markup can be used for mapping page numbers (to align with those in the paper book edition).
Jon Noring has posted to several communities about the page-map issue. Here’s a short extract (slightly edited); [Read more…]