Problem Details: i updated osu on my mac and it says that the .net is out of date and there is no fixing it and when i opened up osu there is a window that pops up and says unable to set pixel format. with that i tried to play osu and it was really choppy when playing 4 star maps on mania. And when changing the key bindings and osu mania layout, my keyboard didnt register.
osu! version: 20150731.2 (latest)
osu! version: 20150731.2 (latest)