Call of Duty: Modern Warfare 2

Hello Members,
I come to you today with a quick little question.
I have downloaded Call of Duty: Modern Warfare 2, and the game works fine.
When I play Single Player, I can go through the whole game no problem.
When I go to multiplayer and I go to search for it a game, it will put me in a lobby.
Once the timer goes to 0 and it goes to the loading screen where it loads the map.
The map is a checker board and the game crashes?
If I don’t get the checker board, and the game don’t crash the map will load then kick me and this error pops up.

Answer #1
I’m assuming this is the pc version. Am I correct?
Answer #2
Are you being serious right now?
Answer #3
Update the cracked version you got.
Well that is what you usually get when your trying to play online with a cracked version.
Answer #4
How do I update it, I never played PC version xD
Answer #5
How do I update it, I never played PC version xD
See that AlterIWnet, Google it.
Answer #6
Are you being serious right now?
Heh, my bad. The picture hadn’t loaded yet
Answer #7
I finally figured out my problem, but now the only maps I can play are…
1. Storm
2. Fuel
3. Strike
4. Vacant
5. Trailer
6. Overgrown
When I try to play on any other maps, it says it can’t find them!?