SDK wont open item test!

[Kilroy]

it keeps saying that my game configurations are invalid or missing. can someone please tell me their filepath or anything else they think might fix it?

[HellJumper]

Check out this guide: http://steamcommunity.com/sharedfiles/filedetails/?id=157717488

[Kilroy]

ok, this helped a ton but now i have aa problem with model viewer. whenever i try to open the model, when i get to the file that the model and components are in and try to open it, modelviewer freezes and crashes