Thanks for your responses. I started testing again, from square one, and found that ground shadows work fine in a default scene. I investigated, and noticed that the scene includes three special cameras to match the three lights. They're called: Shadow Lite 1 Cam Shadow Lite 2 Cam Shadow Lite 3 Cam These are the shadow mapping cameras built by Poser, and I've used them before to zoom in and improve shadow edges. But I've just taken them for granted otherwise. However, in scenes I've built in P5, these three cameras aren't listed, and/or don't exist. These scenes are also the ones where ground shadows don't display. This brings up two questions: 1. Why doesn't the scene I'm working on include these three additional cameras? 2. How do I create them, or copy them into the scene? Thanks, Rick