Cars and them not being able to be used

I have downloaded a few TDM car pack and the models are fine :), the problem is when i come to spawn it in the server and want to use it, its still the model, not a usable car

Anyone know a fix for this, the cars are in:
a) fast-dl Proper folders
b) models in local server garrysmod folder
c) gamemodes content folder

Anyone know a fix, or have the same problem?

Well, when you download normal addons you don’t put them into the gamemodes folder, which you most likely know. So what are you using?

the error i get is

vehicle <> unable to properly initialize due to script error in <>!

but when i set it to a working script it scripts/vehicles/gokart.txt ti still wont allow the vehicle to spawn properly