My only problem with shadows was the Poser ground plane's strange behavior with shadows cast by transparent objects. It doesn't matter if i'm using the transparency settings alone, or combined with a transmap; the ground plane treats all shadows as if they were cast by totally opaque objects. I rediscovered this "feature" today while creating a cardboard-cutout figure using transmaps and a square prop. No amount of fiddling could produce a realistic shadow; it was always rectangular. Then I remembered the problem I had before with transparent windowpanes and the ground plane. The only solution was to turn off the ground plane and use another prop for the ground. Does anyone know why the ground plane behaves this way?