Updating my combat arms (patch)
It nearly finishes but then it goes An error occured during patch. Please try again combat arms and now i have to restart and it happens all the time
what do i do?

Uninstall CA. Re download. Let auto patcher do work. If I helped thank me :P
Redownload the entire client. It will already contain the update.
Also, check your firewall to make sure it isn't blocking it.