Hello, and thank you all for sharing your solutions,
My problem is the same as all of you but a few months ago I solved it as it says springtide99 and it worked perfectly, but every time I connected the Mini Recorder I always came up with an update and updated it and now in this last update, the error appeared.
I have 3 mac all with (High Sierra 10.13.6)
1. imac, thunderbolt 2
2. Macbook Pro 2015, Thunderbolt 2 and hdmi
3. Mackbook Pro 2017 Thunderbolt 3 (usb c).
My problem is only in the imac, it does not work anymore. And I no longer get the message of:
Allow "Blackmagic Design at the bottom of the window in Security and Privacity.
I know that there is the problem because it is solved. But that message does not appear to me!
My device if it appears in: Hardware - Thunderbolt - Blackmagic Design.
Already install, uninstall reboot and I did everything. I have 4 Mini Recorders and none I can make it work.
Someone who has solved it? How can I get the message of: Security and Privacity this: Allow "Blackmagic Design at the bottom of the window?
And yes, it is a headache as it says brilla.
Thanks