Resolve Live - can't get it working (Resolve 14.4 beta)

'Failed to initialize decklink card for Resolve Live'

I'm using a Windows 10 PC with UltraStudio Mini Recorder. When I go to Color > Resolve Live, I get the message above. I'm feeding from a Sony FS7 and tried with an Ikegami studio camera last week. Can anyone help pls?

[Dwaine Maggart]

If you run the BMD Desktop Video Setup app, does it see the Mini Recorder?

In Resolve Preferences - Video I/O and GPU, do you have the Mini Recorder selected as the 'For Resolve Lice use" device?