I have tried two different copies of super mario brothers and i get the error " The system files are corrupted please refer to the wii operations manual for help trouble shooting". I can still play all of my older games but i get this error when i try and play super mario brothers. I am able to play the retail disk with no problem but i cannot play a back up. The wii will start up normally but soon after i insert the disk i get the error. Any help would be greatly appreciated. I am currenlty running a wiiKey 2 with V1.3 and the wii is at update V4.1u.