wiremod adv. dupe problem

i have a problem with adv. duplicator or with wiremod.
i have some dupe’s that use wire thrusters, but every time i spawn a vehicle on a map.
the wire thruster detaches from the main contraption an i get the error : adv. duplicator can’t create wire thruster.
i tried everything and have deleted my garry’smod content three time’s
please help?