Error Code 0
I'm trying to play but everytime it gets to the connecting to server screen, it says Error code: 0
What do I do?
I'm pretty sure it's a problem with your connection to the Nexon Servers.
Try resetting your modem/router, if that doesn't work then try to re-install Combat Arms.
Nope, it's combat arms. It happens if you tried entering golf, your account is "stuck" in the server and you won't be able to login in, until it's fixed.