PnkBstrA.exe and PnkBstrB.exe are in "C:\windows\system32" What I did was to go into "Services" under "Administrative Tools", (which is in the "Windows Control Panel"), found PnkBstrA and PnkbstrB and set them to "Automatic". (Do this with the game running) They run even if the game is not running after this is done. Also set your firewall to let them connect to the internet. I no longer get kicked for PB errors.