I can't start up hammer editor because it pops up an error saying "Game Configuration files missing" or something close to that.
Also, Half-Life 2: Deathmatch is the only game that's available for Source Engine 2006.
It was working 100% fine on Saturday, anyone got any idea what to do? I've tried reset game configurations, but it does nothing. I refreshed SDK Content, same error. I Reinstalled Source SDK, same error.