Anyone else have trouble playing off line mode? I am taking my computer to a friends house and he doesnt have the net, i have updated everything and can play fine in online mode, it even lets me play half life 1 in offline mode but it tells me there was an error connecting for half life 2, i have a legal version i just wanna play it. im sure this is the wrong place, but i am going tommorow and would appreciate any help.