Source SDK Fatal Error : "script/game_sounds_manifest.txt"

Everything I try to run face poser or model viewer I get a fatal error that tells me I’m missing a file. “script/game_sounds_manifest.txt”

I can’t run SDK for any Valve games on my PC.
I posted earlier about t but I don’t thin I had any help.
Anyone have any suggestions on how to fix this problem?

Which game do you have it set to?
Is that file in the specified directory?