Gmod and Vmod not working.

I have several vehicle packs, but I cant get my Gmow or Vmod work, they spawn, but they seem to be invisible. And if you get in the car, screen goes black and you have to exit the server (singeplayer game)
So what’s the problem?
Can someone tell me and help, or give me full working gmod and vmod packs?

They don’t work anymore.