following up as promised to say that installing serialosc was a breeze. after a quick download/install/reboot it just worked
for the record i’m running Catalina 10.15.2 on a brand new 16" mb pro
also props to team monome for the great new docs. it’s obv been awhile since i’ve been on that part of the site and although i’m quite familiar with this stuff now, it’s refreshing to see the care and effort put in to make things as clear as possible for newcomers