I have CS5.5 with the latest updates. I happily made several epub books last year, but beginning in December, I've begun to have a problem. Has there been some update that might have caused the change?
Anyway, I build my book by putting each chapter into a different document, then put them together with the book function. I designate each chapter title with a paragraph style "chapter title." Then, after hitting export to epub, I select to break the book at "chapter title." Before December, this worked just as it should have.
Now, however, I get double chapters - the first has no text but does contain html, and is designated (for instance) Chapter 1. The second is designated Chapter 1-1 and contains the text and html. WHy is Indesign doubling the chapters like this?