Audio gets "stuck" between Resolve & Audio I/O

Started Resolve and got the usual 1 second full scale POP across all outputs (yikes!), however this time seemed to fry my I/O. No amount of rebooting hardware or software would clear it, until I rebooted Resolve. Meters are constantly frozen in place, both on the hardware and software console (image attached).
Which points at Resolve as the culprit here. Rebooted the app and the frozen meters cleared up, however now I can't get audio to reach the I/O.
So I rebooted the SX-36, which brought back one of the little status lights (hurray!), however I'm still not getting audio from the computer/CC-2 to my I/O...
Rebooted Resolve once more, again with the full scale noise blasts (on app launch and again when opening a project), audio shows as playing back in Resolve, but never makes it to my audio I/O - no input showing at all, yet it shows as synced and clocked to the MADI input stream.
Ideas?
Screenshots to illustrate.
Which points at Resolve as the culprit here. Rebooted the app and the frozen meters cleared up, however now I can't get audio to reach the I/O.
So I rebooted the SX-36, which brought back one of the little status lights (hurray!), however I'm still not getting audio from the computer/CC-2 to my I/O...
Rebooted Resolve once more, again with the full scale noise blasts (on app launch and again when opening a project), audio shows as playing back in Resolve, but never makes it to my audio I/O - no input showing at all, yet it shows as synced and clocked to the MADI input stream.
Ideas?
Screenshots to illustrate.