I've been trying to complete a 90 minute high def video but it constantly crashes if I put more than 20 minutes on the "timeline". At first I thought this was a "vista" issue, but it happens on my XP system too. Does this have anything to do with the file size in my source folder or my project folder? I wonder because I was able to complete a 30 minute project with no issues. The project I'm trying to complete is 4.3Gb. Any ideas?