Okay, so I downloaded the map pack "First Strike" for Black Ops.
Then I downloaded the newest pack "Rezurrection".
Then I tried to play "Moon" and it would be stuck at the loading screen.
Then I tried to play "Ascension" and same thing.
Then I tried the classic ones and those worked...
Also one of the MP Maps doesn't work and thats "Kowloon"
Please help me with this I really like ascension (played at a friends house) and that's pretty much why I got the map pack.
Thanks for your help if you do try :)