I know stuff is being worked on, but these are the bugs (not skin bugs) I have found so far.

-Submitting certain forms (i.e. sending a Private Message, changing the skin, or editing a post) appends an extra '?' to the GET query before the existing '?', resulting in a GET query fail. This does not actually affect the page submission, and it does not happen all the time.
-Submitting a post that is exactly the same (byte-for-byte) as the one above it results in an error. Your double-submission script needs to check authors

Also logging in while viewing a topic. It redirects you to the page with an extra '?' creating that error too.

I uploaded a file to fix something that had other changes for a more serious update... breaking many things until I finish what I was working on.
So for the moment, we are stuck in this half-updated crap ;o I'm working on it as fast as I can (as in, as much as I can get on the computer... gf started playing oblivion so i should be good for the next couple hours)

I'd say that's a non-aesthetic error. Happened after I voted in the poll in the topic.