I'm experiencing a similar problem as well. A bunch of my games (COD, Mortal Kombat, Wii fit plus, fling smash) are freezing on load or right after the controller picture. Please help!
Add 250 v19 and use it instead by hitting 1 on the game and be sure to hit 2 to save. Should work just fine. COD will not load otherwise. Setting 250 as default would be nice . . .