[Sew_Sumi]

Код:

for(new vid; vid < GetVehiclePoolSize()+1; vid++)

Don't use it like that, use it as is shown on the wiki as per the example.

Код:

for(new i = 1, j = GetVehiclePoolSize(); i <= j; i++)

If you're wanting to isolate the problem in it, maybe you shouldn't load up the function with other purposes than the vehicles.