More Questions: Why did I try to reply in the Poser forum? How big is the file? What program did you model your hair in? What file format are you using? Are you using Bryce 4? Bryce 3D used to spit and die (same message) when I tried loading anything above 8-10Meg on .dxf formats (running on a Pentium Pro 200 with 128 Meg of Ram and no programs running in the background). I think I tried converting the files (tree files created by Onyx Tree Pro) using Ray Dream with no success. Bryce 4 handles large models much better, not that I try to load much more than 10 Meg at a time though ;-) Also, not all modellers create completely compatible products even when the extensions are the same. *.wrl VMRL format files seem to have the most incompatibilities. Poser seems to create the most stable products, You might try using Poser as a translator, exporting your hair from Poser in a .3ds format or as an .obj format. I also had some luck in dividing the models and loading parts separately, tree branches as one load, leaves as another, etc. Bryce 3D could handle about 50 Megs of scenery on the above machine, but once again Bryce 4 is vastly better at that. By the way, Bryce has some mondo problems when handling fancy hair. I'm rendering Yamato/Kozaburo's Nene411SE in Bryce 4 right now, at 1024 x768 resolution fine quality anti-aliasing, it looks like its going to take 3 days+ to render on a Pentium II 350 Mhz with 128 Meg of Ram >:( I think its all those wonderful transparency maps.