I suspect that the group names of your Armor.obj are incorrect. It only takes a small error, sometimes a wrongly capitalised letter, for Poser to throw a fit. Also for this exercise ignore that third OBJ reference. It does have some bearing but at this stage we can bypass it. Can you send me the armor.obj file? I know that you would not want me to do this for you, but with it I can continue to point you in the right direction