Actually I've had the same problem with P5 and only when using the Firefly renderer. Poser 4 renderer doesn't seem to yield the same problem. Before new patch was installed Poser 5 crashed a lot but I didn't get that error. It's not an obj issue though it might be a texture issue or an issue with one of the firefly render settings. Not entirely sure. I have removed bump maps. I also have an unrelated problem with the firefly renderer causing small dashes on the render. Not sure what that's about. It happens on every render. It looks like as the Firefly renderer moves across the grid there are some gaps between the grid and the scene which causes some of these gaps. I might make a post of this eventually when I have more time and if I don't continuously get these exception errors. I haven't reported the problem to CL and I want to test the problem with additional RAM. Currently my system is an Athlon 2.1Ghz, 512MB RAM, Geforce 4 Ti4400. I've used textures as small as 2000x2000 and as large as 4000x4000.