Whener I use "select book" in my Audiobooks player on my N95-1, I get the above message. As you can see, it doesn't tell me which book's table of content to check, and it also doesn't tel me what to look for when I check it, and as I currently have 34 books in my Audiobooks directory (is this a record?), it would take some finding!
Developers, can you check this error message and work on it to make it more meaningful? Or advise me of what to look for in my tables of contents?