Yeah, I forgot to mention that. Since I have a dual-core system, I'm using the seperate process option. It's FFRender.exe that crashes; Poser itself is pretty much alright, though I do have to close it and restart if I want to do any more renders.

I'll try lowering bucket-sizes but I haven't had any system errors about low memory and memory really shouldn't be a problem since I have about 4GB installed.