I'm able to run JMRI on a Mac running OS 10.15.4 and an RR-Circuits LocoBuffer-USB. ?I don't know if this will work for you, but I found that I did NOT need to install the drivers recommended for LocoBuffer. ?The system just recognized the device when it was plugged in and all was well from there. ?I did try installing the extensions as the documentation suggested, but then it wouldn't work. ?So I uninstalled them and it's working again (with a reboot in between to ensure they weren't still running) Strange, but since it was working I stuck with it. ?
Your milage may vary of course.
Good luck,
Rich
