Roon B475 Just Spins when try to open (Yosemite 10.10.5)

[wizardofoz (Mr Fix It aka The Wiz)]

Notice about Roon and Mac OS Yosemite 10.10.5

The team is currently investigating compatibility issues with Mac OS 10.10.5 that have arisen due to changes we had to implement for Mac OS Catalina compatibility in our latest release, Build 475. Outside of Catalina compatibility changes, there were no other changes in Build 475, so our current recommendation is to install Build 416 (the previous version of Roon) until our team’s investigation concludes. Once you’ve installed Build 416 we recommend turning off your network connection, opening…