Black Weapons?

Recently my weapons on garry’s mod have turned black…like certain parts of guns would be pure black…unlike the purple and black error mark. I dont know how this happened but this upsets me because i recently bought CSS to fix bullet errors and get more textures for more SWEPS. In fact most weapons in CSS are also black now too…i dont know what to do, and any help would be greatly appreciated.

thats kind of happening to me except its doing it to everything, ragdolls cars props, every thing has blobs of black and stuff