I sent off a pz3 to CL that was consistently causing a c exception on render and they're currently working on it. I was using displacement maps, bump maps and P5 hair, and for me anyway this seems to cause problems. I tried again using the same props last night, but adding them again in a different order, and the addition of the hair was what finally caused the c exception during render. I'm on WinXP home, have an Althon 1.8 cpu, 1 gb ram, nVidia video card. So we'll have to see what they come up with next week - hopefully a solution.