I have GRAW 2 Legacy Edition. I put it in the drive I get a screen that says "Expansion Pack Installer". Gives me a number of choices to install updates. . Whether I install one or all, it tell me to "Finish and Eject Disk" and "Insert your game disk to play the game. I reinsert the disk and I get into an endless loop. The game is on this disk. I don't undersand. Any explanation or advice? Thanks.