Great, I'm going to have to restart the game :(. I was in the Secret Cave, and the third trainer had a "?" Pokemon. I can't kill it or anything, when I try it just freezes. And I used a save state during the battle :(
My team was really great too...lvl 50 Venusaur, lvl 48 Houndoom and a lvl 49 Porygon2 (btw, can you get the Dubious Disk in Brown 2009? Or is it only Up-Grade?).