Hello, @macaumetal !
Thanks for reporting!
Could you please share your Windows Application Events? - You may find how to reach them here.
Also, it would be good if you shared with us your
Roon logs. The way to get them you may find here.Please, upload all the logs here.
After that, you may try to kill all the Roon-related processes in the Task Manager and restart Roon.
Thanks,
Andrew