Dr Zen wrote on 9/24/2018, 11:38 PM

I had the same problem.
On my computer the problem was caused by too many different versions of the same 3rd Party FX being installed from other versions of Vegas. After I uninstalled many old FX, the program opened OK.

If Eric's link does not help you, which exact version of Vegas do you own now ?
Example: Are you using Movie Studio 15 or Vegas Movie Studio 15 Platinum or Vegas Movie Studio 15 Suite ?
And which exact older versions of Vegas do you still have installed ?