Wayne Wonda

Im having problems getting the damn game to play. I downloaded it to my 360's hd successfully then went to FO3 and started the game. I selected the Downloads option and under view available content for DL was operation anchorage. Whenever I try to select it nothing happens. What am i doing wrong? I deleted the file the first time thinking it was a bad install. But the problem still happened when I installed anew again. Anyone else had this issue or know what I can do here? I want to play!! Help!!