Are you useing the firefly renderer? The Poser 4 renderer is terrable with shadows. I've sat and worked till I was happy. Then if you add an object or make a change all the shadows change. I blame this on "Shadow Maps". If you are useing the poser 4 renderer it probly doesn't bother to render the map for out of view stuff. I figure the ray-trace renderer in poser 5 would work though.