I downloaded Source Sdk. Before you click on hammer lo load it, you select which game you want to map for. Originally the only ones I could see were portal, teamfortress, and hl2 episode 2. In hammer I set up a new game configuration for hl2 and named it "hl2". I set up all of the game configurations correctly and build programs. Now when I load source sdk, I am able to select hl2 at the bottom and than click hammer. When i click new and it loads up and the 3 graphs and 1 camera screen load up if I click on any of the graphs or do any function in hammer it causes an error and kicks me out. I am pretty sure I have all of the game config.s set up right and everything, is there anything special I may need to do? ...It was working once but in the camera view in hammer I wasn't able to view 3dtextured polygons. Hammer works fine when I use it for portal and the other mods.