Blackmagic Forum

Did a fresh install of Mojave on a new HDD on my Mac Pro 5.1.
Mac sees the card but "No Desktop Video Device Detected."
It ran perfectly before the install.

Tried many different Desktop Video going back to Blackmagic_Desktop_Video_10.8.6 which it ran on best.
I've seen on forums that an a PC the device has to be activated but cannot figure out why the card is not bering detected by the driver. any help would be most welcome.

Thank you.

Mojave 10.14.6 (18G6042)
Memory: 128 GB 1333 MHz DDR3
Model Name: Mac Pro
Model Identifier: MacPro5,1
Processor Name: 6-Core Intel Xeon
Processor Speed: 3.33 GHz
Number of Processors: 2
Total Number of Cores: 12
L2 Cache (per Core): 256 KB
L3 Cache (per Processor): 12 MB
Hyper-Threading Technology: Enabled
Memory: 128 GB
Boot ROM Version: 144.0.0.0.0
SMC Version (system): 1.39f5
SMC Version (processor tray): 1.39f5

I did do the security update to Mojave yesterday as well.
Could that possibly have something to do with it?

I figured it out - it was Soundflower. Once I uninstalled that Blackmagic works again.