I am running Poser 5 on my computer and haven't had any type of issues that I have seen posted. I even installed the patch with no probelm. Although, the rendering is very slow. My system specs: P4 1.2 Win2k Pro with the latest serivce pack. 512 DDIMS G3 Nivida 64MB AGPX2 52X CD ROM DVD Writter 3HD (one for the OS, On for my Graphic Apps, one for DVD Authoring.)