GTA 4 patch 1.0.4.0 crashes and resets car mods?

[durpflip]

it always happens when i add cars to GTA 4. any car.

i install a car pack (this one in particular,and some other car mods ; http://www.gta4-mods.com/vehicles/louping0s-41-car-pack-added-cars-v50-f30592)and i crash after loading my save (with no cars). i checked the handling.dat and vehicles.ide after the crash,and the line for the car pack/car mod isn't there anymore. the image for the vehicles still is though and so are the packages.

i'm using a config that used to work with steam version of the game. scripthookdotnet,xliveless,MIG ENB. i also added "better city textures" in the 1.0.4.0 version and not the steam version.

EDIT ; i realized the car PACK wasn't the best idea,but still though the other cars from different sources didn't work (which is odd since it said it was compatible).

Edited January 12, 2015 by durpflip