It isn't a bug as such but I agree with cwjakesteel because DM does stop your disc drive from playing retail games.
I understand this shouldn't be a problem if you back up all your games to USB anyway but I have games that aren't compatible such as Rogue Ops and Everything or Nothing.
Look forward to when GameCube USB support is available along with existing SD support AND use of the Wii Disc drive for retail copies!
That message was for varaques sorry!
Please Use The Edit Function!