Ok, so first i bought Halo: CE and tried to play it on my 360 (connected to live with HDD), but I got the message "Could not run game. Please download the game again". I thought when you connected to live it automatically updated backwards compatibility, but I guess it didn't. So I burned a disk like it said in troubleshooting; it said it was updated, but the same thing happened again. So, I though it might be the game. I returned Halo and got Star Wars: Republic Commando, hoping it would work, but it didnt; the same thing happened. I think it might be my console, since it is refurbished (I dont know why that would make a difference, though). I am stumped! Anyone have any suggestions?