Well tasterix, It was one that bsu just dled from you, before he selected the difficulty, he lagged out (this wasn't the problem, just the catalyst) and because of that, all the difficulties were chosen. Its problem thats very unlikely to come up, and you would rehost anyway (or at least i would, especially if the host was my friend :3)
Aside from that, most problems are just minor, and have to do with instructions :/