I put this in the wrong part of forum so will put it here instead. When i go to launch ep2 from steam it just that hl2.exe has generated errors and will be closed by windows. does the same thing for ep1. I havent got any firewalls or antivirus's running as have quite recent reinstalled windows. only the router firewall. Cant figure out whats wrong. After trying to launch it a few times i get a steam error and it says that this game is current unavailable, please try again later. Now ive tried to launch episode 1 and it just say only one instance can be running at one time.. this is weird.