bogwopped, Steve from e-onsoftware explained to me, that, if you have a scene over 100 MB big, you may need in fact 2Giga memory. I only have 1 Gig RAM on a 2.8 Machine and only had crash problems when scenes becomes really extremely heavy. Otherwise not. Vue 4 Pro works like a charm :-) So that's not a Vue 4 Pro problem, just a problem of our poor machines. A hint from Steve: Disable multiple undos, uncheck the small preview window, hide layers and objects you don't need absolutely to see while working on your scene, group objects. Guitta