Ok, thanks David. Sorry for the trouble here. This is almost always due to an issue with your OSX permissions, and it’s generally a pretty quick fix. Can you try following these steps, and let me know if you have any problems?
First make sure Roon isn’t already running – you may need to check Activity Monitor.
Then, you’ll need to open Terminal like this:
Then, you’ll want to copy this command (CMD+C) and then paste it into the terminal window (CMD+V):
sudo chown $(whoami) ~ ~/Library; chmod u+rwx ~/ ~/Library
At this point you’ll be asked to type in your password – note that you may not see anything as you type. That’s expected, so just type the password correctly, hit enter, and you’re done!
Try to run Roon again, and let me know how it goes.