Forum internal server error since update to 4.0.2 PL4
 

So i updated from 4.0.2 PL1 to 4.0.2 PL4

I used the normal upgrade procedure(not patches). Admincp says i'm running 4.0.2pl4 now, but i can't go to any subforums. I can see the forum, but can't go to any subforum(server error 500)

Forum is closed at the moment. http://www.bizimmekan.be

Now what?:confused: