You can try the new build i just uploaded. It should fix that issue.
hmm.. nope. Still can’t set MIDI input to plugin host or Output to plugin host. Trying in both ableton live and reaper on mac os 10.6.8.
I first saved the panel in the latest build, then opened the panel from the new build’s vst in reaper. confirmed the version number is the new build, but even just from there I can’t toggle Input/Out to plugin host.