Why put out an eBook you don't know what to do with?
I recently bought the new Millennium Edition of So You Want to be a Wizard by Diane Duane. I've had a look at the code. It's a Calibre conversion of some source and then run through Sigil. She (or whoever is her eBook maker) has no clue how to make a good eBook.
The code is a mess on top of a mess. And it has all of those nice SGC styles all over the place. And then there are the filenames for the XML files that have not been fixed. For a professional author, she should be ashamed of releasing an eBook like this.