Sounds to me like we have an ATI problem for sure. I have tried just about every combination of open gl parameter options in vue pro. I hate stepping back to wireframe as one of my big reasons for going to pro was to be able to use open gl to help plant placement. I did step back to wire frame, loaded some scenes that had caused crashes and had no problem. Next I went back to open gl, loaded the same scenes and had no problems. ?????? I am now busily trying to recreate earlier crashes to verify what is going on but can't nail it down any further than an ATI related bug. e-on & ATI are you listening?? mokba