Yeah, me, too. I can't create new threads, either. I used to be able to, didn't do it for a while (maybe six months), and then was stymied when I tried to do it. I concluded that there was some simple thing I wasn't doing that I used to do and that this missed step was preventing me from posting new threads.
My problem is that when I get to the "New Communities" part, the page stays blank and I can't get around this problem. There is a subsequent part that I can't fill in either, but it does not matter because I can't get past the "new communities" part.
Ironically, I cannot post a new thread on "Site Talk" to get help because (obviously), I can't start a new thread to ask the question which I need answered. Catch-22! This is off topic, but I don't know where else to put it. MODS, can you help?