Quick thought Russ, check the stock IPB settings and modules (if it's like phpBB2) with this version you have here on the site to see what's different and maybe one of those things could be causing a problem. And, also, make sure the settings on this custom skin are configured correctly too. A friend of mine changed some code on a skin for phpBB2 and ended up making everything in capital letters and couldn't figure out how to turn it back.