First of all, i'm not sure if this is in the right area, if it's not, could an admin please move it to the right place, thanks. Whenever I try to open hammer, I first of all get a warning saying: Then when I click run anyway, it says: Down the bottom of Source SDK, the engine version is Source Engine 2009, and the current game is Team Fortress 2. I'm running windows 7, don't know if it'll make a difference, but it has never happened to me before and I was successfully was running hammer about 3 or 4 days ago. I would greatly appreciate it if anyone knew anything about this and how to fix it.