I was a bit unsure about Vue4 because of problems with the demo (on a win ME machine), but the only problem I have had since I got my copy (about one week) is memory. If Vue 4 crashes, so far, I have been able to trace it to the swap file eating up the remaining disk space on C: This is a major improvement over the demo version, and I haven't any regrets for the money I spent. Good luck!