Just to try and help others avoid the problems I've had. This programme has eaten hours and hours of my time. Not only with crashes but also sound problems and rendering freezes and all sorts. I've wasted hours with tech support and despite my best efforts and following all their long and arduous suggestions none of the 3 major problems have been solved. I simply cannot produce an edited movie with it. I'm just about to give up after 5 long hard months of persistence and buy a different package. My system is 3.4 GHz and 250 GB with 1024 RAM.