I just want to say, that I worked the whole day with POSER PRO (the full edition) (for about 224 bucks) and POSER Pro renders perfectly fast and without errors!!!!

I rendered 2000 x 1800 pixel pix at 300dpi  (for printing) with displacement, raytracing, shadows and so on and so enabled... EVERYthing fine!!!

I downloaded  a cpu- and-fan-application and watched on my second monitor the temperatur and the fans during work and rendering... EVERYthing fine!!!

And I've got an ordinary PC: WinXP home, Athlon dualcore, 4GB DDR RAM (not DDR2), 512MB graphiccard...

And most important: Before when I rendered the very same picture on the same PC with Poser 7, Poser 7 was always running out of memory and crashing... With POSER PRO it NEVER happened today..

Hope you find a solution for your problem....

So maybe this can help