I want to start out saying this mod has really worked out well in my plans to upgrade my books listing. Now on to the problem.

I originally installed the mod on a fresh zc install and it worked beautifully. No errors, nothing. I then installed it on a working copy with other mods already installed. Still no errors, but spiffycal isn't working for the book type product. I have doubled and triple checked the code and it is correct. I have no idea on where to look for the problem. Any help would be greatly appreciated.

Thanks,
Heather