I apologise to everyone, but it looks as though the books module had a problem (or several) since I've upgraded it. Although you could see them fine in the blocks to the right, and on the main library page, when you clicked on a link for the details of a book, only a blank page was displayed. Likewise, there seemed to be problems on the admin side with adding and modifying existing books.

I've tested the code, and it all works fine. For whatever reason, the existing data is somehow causing the problem.

So I've had to start over again from scratch. It pains me because we've got almost 600 books in there. I'll try to add them over again one at a time, but it's going to take a while. It's working again, so I'd appreciate any help people would like to offer in adding the data over again and making this the most complete listing of White Wolf products we can. Thanks, everyone.