I know it's been a while but I'm still hitting this issue even with the new version of the board, now that I've installed it.
If I turn on my servers to enforce lowercase only, which is generally an important thing to do, I can't make new posts. The "B" in Board for making a new post has to be uppercase or the UBB code won't work.
If someone could tell me where to change that in the UBB code I'll do it - but I really think going forward the code should not be case sensitive on that B in board and/or it should be a lowercase B.
Thanks!