whilst in all honesty there could well be someting about your computer that's causing so severe a problem (or the installation of windows, or the video drivers, or...and so on and so forth) there are still far too many "issues" with the product this long after release. It's certainly far easier to get an expected result from Poser 4 with even comparatively simple scenes/animations. Poser 5's enhancements are, on paper, very exciting. But there's too many letdowns... missing anticipated features like new animals, or render failures such as , even for those who have the program running without significant crashes, IMHO.