missing CSS models?

i bought Gmod awhile ago and have had no problems with it until now. for some reason my standard CSS models and such have VANISHED. i used to be able to use the standard set of CSS guns that came with garrysmod but now all i get is a giant ERROR over my head. none of the props spawn eaither. i have tried all kinds of things to fix this but nothing has worked so far. any help is hugely appreciated. thanks
-Fly

Do you actually own CSS?

yes. i actually bought GMOD and CSS from steam

Delete your Garry’s Mod folder and it should work again.

ive don that and no, it didnt work

[editline]04:20PM[/editline]

does CSS need to be installed?i had everything working although it was no installed

[editline]04:36PM[/editline]

is there a console command i need to enter to turn on CSS content? ive gone to extensions and it says CSS is enabled, but still theres nothing