Wavelab 8 Crashing On Startup

I think I found the problem but not sure of the cause. Maybe one of two things. WL8 is working now. A few years back I had a project come in on Pro Tools. I installed Pro Tools 9 and the hardware unit drivers for the latest version of Avid’s M Box. I uninstalled both Pro Tools and the hardware drivers and WL8 opens now without any issues.