I'm having the exact same problem with Ninja Gaiden 2 Sigma. I'm on Kmeaw 3.55 and the game after the update, I think, starts showing up as game data on xmb (the folder where the game usually installs during the first boot up). I downloaded the update PKG online. no matter what order I do it in I can't install the game pkg after I install the update one. Perhaps you guys can help me? multiMan doesn't see the games in the "game" folder and if I try to boot them using EBOOT it just throws me back to xmb.