Hey, colleague of Paul Jay here… moving away the /Library/PostgreSQL folder helpt, just to make sure others reading this without black belt in Terminal: you need to either run this command as root, so “sudo mv …” or, just rename the folder in the Finder. Then reinstall Resolve, and it worked.
Mac we’re running this on has dual ethernet connections (for Xsan setup), don’t know if that’s source of the issue, but just noticing it.