blank screen when posting, C.L. 0.3.1

I'm sorry for posting my question here as well, but I thought that there is no place more logical than the creator's forum, and I need a solution a.s.a.p.

I have problems with the Contact List 0.3.1 Beta feature.
I think I installed everything properly, and it looks just fine - the forums look just as they do, no visible errors, I can add buddies, ignore, etc.
But everytime I try to post, I get a blank http://www.*******.***/forum/posting.php screen.

No idea what's wrong.

Double check the edits in the posting_body.tpl file. That's the only aspect of the posting form that is touched by CL, so that has to be the source of the problem.