before you ask: YES, I have CS:S, YES, I bought GMod, and YES, I also bought CS:S.
Everything worked just fine until today. When I wanted to play some TTT, I was suddenly confronted with following issues:
Since this is a CS:S map, I suppose it’s an error with the CSS textures. They’re not being loaded into GMod.
Also, when I spawn CS:S stuff (SP and MP), I instead get Errors. The rest (TF2, Portal) works.
What could be wrong?