"Bad Version" Problem

Just got ArmA 2 Combined Operations today from best buy, but when I try entering a Multiplayer game I get the error message "Bad Version" and I'm not sure how to fix it?

? are you patched up to the latest? 1.54?

where can i check it at?

I guess the search button pwnoobs. Kinda ironic.

give hm the link or direct him where he can go, as other folks read these posts that do need help.

To check to see if you have the latest patch which you dont is just go ingame,

and look at the bottem right on the menu, it should say your game name,

and then underneath it will say what version.

to get patches and everyhing else game related for downloads go here:

http://www.armaholic.com/list.php?c=files

click on the box for the game you got and the patches download will be on the bottem left.