Thu Sep 14, 2017 5:03 pm
I noticed the same problem. While the system preference pane will not launch, you can access the same settings through the Desktop Video Settings app in the applications folder. Black Magic support told me a fix for this bug is in the works.
Kevin Wolff
iMac Pro, Radeon Pro Vega 56 8GB, 32MB RAM, Ultrastudio Mini Monitor, Flanders Scientific CM 171, MOTU M4