I thought that only the others get problem with Poser5 and FireFly. Now it hit me in the middle of my face. I got a nice scene and it renders well in Poser5 with the Poser4 renderer. When I use FireFly it stalls. It calculates the shadow maps and it even starts rendering (about 10%) then it seems to go into some kind of endless loop. I'm on a PC (AMD 2100+, 1GByte RAM) and the system monitor tells me that Poser is currently using 1.4 GByte memory. Still 600MByte left. I can start other applications and I can even access the Poser Menu Bar (all is grayed out except the Help). Seems that FireFly has gone to some endless loop. Didn't change anything on my Poser5 installation. I have SR3 installed (German Version, so don't tell me to try SR4). FireFly settings are - Shadow Maps - Polygon Smoothing - Texture Filter - Pixel-Sampling 3 Any idea how to improve the situation? Thanks - Walter