I've installed a number of SNES, Genesis, TurboGrafx16 and WiiWare Wads. TG16 and WiiWare games work, but after running SNES and Genesis games, the screen just goes blank. I read that installing IOS38 IOS53 IOS55 might help. After doing that, I do hear sound from SNES and Genesis games, but I just get a blank screen. Am I missing an IOS? Any help would be much appreciated.