Try commenting out the following function:
function VultureVehicle::onAdd(%this,%obj)
{
for(%i = 0; %i < %this.numWheels; %i++)
{
%obj.setWheelTire(%i, %this.defaultTire);
%obj.setWheelSpring(%i, %this.defaultSpring);
}
%obj.setWheelSteering(0,1);
%obj.setWheelSteering(1,1);
%obj.setWheelSteering(2,-1);
%obj.setWheelSteering(3,-1);
%obj.setWheelPowered(0,true);
%obj.setWheelPowered(1,true);
%obj.setWheelPowered(2,true);
%obj.setWheelPowered(3,true);
VultureEngineCheck(%obj);
}
(type two forward slashes (//) in front of each line of the function)