whenever I open up my hammer for CS:S it is saying, "The configuration information for the game you're trying to edit is invalid or missing." then, if I click "Run anyway" I get another error message saying, "Setup file 'gameinfo.txt' doesn't exist in subdirectory steam\steamapps\(my steam user)\counter-strike source\cstrike'. Check your -game parameter or VCONFIG setting." I have tried validating my hammer cache and deleted my config in my cstrike but still nothing. It also says this when I open hammer for other games (gmod, ep1) Bear in mind that I can open SDK fine but not hammer itself.