I was having the same issue. I had to download Parallels on my MacBook to run Windows 10 (used their 14 day free trial, no CC needed). Then I went to Race Keeper and downloaded Race-Keeper Comparo HD. Once I had that installed I was finally able to export the videos.
Just went through this 2 weeks ago. 2016 Avalanche Gray, tech pack, 13500 miles. Dealer offered and I accepted $38,000.
They then listed it for $45,000 and the car was gone in 3 days.