Sorry, for the late answer. I was trying out some tips the last time ..

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Quote - Laska , did you actually uninstall Poser using Add/Remove programs or did you just re-install Poser over the existing program? quote] I reinstalled the old poser first and I also delated everything except my runtime folder. Also I installed to a different partition of my harddrive.I copied  the old runtime to the new Poser6...

Now I installed only the SR2 update to see what happens then. Actually I tried to render the old James like he comes when I open the program. Only with Auto settings. I tried to render 2000x1800 pi. But it stoped again. I have an ATI Radeon graphic card with 256MB...this shouldn't be a problem...I'm afraid I will really have to reinstall my whole PC...