I have this problem and I have Vegas Pro 17 installed on my film editing station with additions from Red Gain and New BlueFX. I bought Vegas PRO 18 and it installs everything ok but when I want to start the program right after loading it crashes with an error report. Could the reason be that there are add-ons installed. Note that on another computer Vegas PRO 18 normally installed and it is a much worse unit. What is wrong? Will you help?