Er...I have no idea how errors come up with the level, nor how to fix them.
Sorry.
Oh, and I totally agree about the Copyright issue. I was making a space game with KS using music by Zoe Kieting, and I guess I can't release it, because no other music seems to fit. My wife says for future levels I should check out Creative Common's site.
Sorry. A little off topic. It's just a little irritating.