That usually happens when the name for the robot in the bindings doesn't exist, or is incorrect.
Oh I'll be doing some banging.......
# 160 - Unknown Robotics 3 list.append(("Forgotten Saw","DirectionalSpinner"{'invertible':Flase,'nose':math.pi,'range':500,'radius':0.4,'topspeed':100,'throttle':130,'turn':60,'turnspeed':2.5,'weapons':(25,)}))