Vue's implementation of OpenGL has caused problems with some graphics cards. There's been endless discussion about this in the forum (do a search on OpenGL and see what you come up with!). I was used to working in wireframe with Bryce, so turning off OpenGL in Vue and Vue Pro was no big deal for me, and greatly helped the stability of the proggies on my machine. That said, timoteo1 has a point about saving. I do incremental saves of a scene, with a slightly different name each time. Often when Vue/Pro crashes, it corrupts the scene file. If you have the option checked to make a .bak (backup file) of your file, you can usually reopen it that way. But to save yourself aggravation, best to do fairly constant saves just in case. I also put things in layers, cool in Pro because you can create as many layers as you need. Group items within the layers as well. I have a gig of RAM in my machine, and that has helped me with larger scenes, but I don't know how much it has to do with the stability of the program, other than the point folks make about "you never have enough RAM"!

Sgiathalaich