I love Roon and I apologize for not being more technically oriented.
Now that I’ve updated both my core and tablet, I can’t get my tablet to see my core device and my music is playing through the speakers in my core (MacBook Air). I opened the settings on my core and the only options given under Sound Output are Default - Internal Speakers and Internal Speakers.
Can you share some screenshots of your Roon Settings -> Audio Tab? You can use these instructions to upload screenshots to this community site.
I have sometimes seen OSX firewalls block Roon after an update, can you double check to make sure this hasn’t by any chance happened by following these instructions?