- Posts: 43
- Joined: Sun Jan 24, 2016 11:16 am
It's most likely to be a problem (acknowledged by Blackmagic Support) with the Desktop Video 10.6.2 driver package. If you're running it on El Capitan then it's almost sure to be the cause. I've had a number of problems on two systems running El Capitan while my third is running Yosemite with an earlier version of Desktop Video which has no problems) and the latest version of Desktop Video. I experienced symptoms identical to yours.
Here's a thread I started on this very topic:
viewtopic.php?f=18&t=45568