What effect are you trying for? It would seem that the rock is no longer black in a few of these. If you're trying to get the rock to cast shadows or the character to cast a shadow onto the rock, you could try changing the material on the rock, using one of the P5 materials and placing something under the rock. You could also try changing your shadow light settings from depth map to ray tracing. I tried playing with this a bit and got much the same result you did when using "cast shadows" in my rendering settings. I think it might be one of those P5 features, but I'm not sure :) I ran out of time to experiment. Maybe there are some P5 experts here who know how to make a perfectly good rock cast a shadow onto something or from a character onto the rock (as I suspect you are trying to do one or both of these)