As you can see, theres a bit of a problem with showing categories. I did not edit this template aside from image locations. I'm using Firefox, latest version, vBulletin 3.6.8.
It looks as if the header is involved with this problem, I would like to remove the header altogether anyway. The L-shaped header just spoils the entire style in my opinion. Any help would be greatly appreciated, it's a really good style.
PS: In case this is the problem, I don't see how a category can not be "properly configured"