As everyone who plays CA knows, Ca's been crashing like hell lately for a lot of people. Well, after trying a shit load of fixes, I decided to wing a few of 'em, and I found one that worked for me, so it'll probably work for you. First thing I did was uninstall combat arms completely. Then I uninstalled pando Media Booster, then Nexon Game manager. After that, I ran CCleaner, did a defrag, and reinstalled Combat Arms, the game manager, and pando Media Booster. After a few tries to load up CA, it finally connected to the server, and now it works on the first try.
Hope I helped. If not, Soz.