Hey just wondering if you’ve gotten this straightened out, My job has just recently purchased a new Mac Pro and Avid Xpress. I get the same thing you do and I’ve installed and quit and installed and quit. I even brought the software home on my Imac and nothing gives, I get the same error. If you did find a solution or what the problem is I’d love to know my email is nick.young2@us.army.mil. I’ve got deadlines too…Thanks in advance.