Recently, my friend gifted me Counter Strike: Source. I was playing on the that day and everything is working perfectly. All of a sudden, today, when I try to pick any server, a dialog box comes up and says:
"Your version doesn't match the servers. Please restart the game."
I restarted it, nothing. I verified integrity of game cache, nothing. My game is fully updated. I even restarted steam, nothing.
The same problem happens with Half Life 2: Deathmatch. So any ideas? I really want to get playing D: