sorry if this has been addressed before, but I couldn't find it...
so, the other day while playing some custom maps in portal worlds, I noticed blocks being lighter than they should... then I played somebody's custom map that was in mario world and saw it more clearly. Any insight into what's going on here? I have no other graphical issues and the game runs perfectly fine except sometimes this random bar of white appears and lightens stuff up, and it only seems to happen in custom maps.
http://imageshack.us/photo/my-images/707/problemlo.png/
