Update: I made a new account on my computer and tried installing everything from scratch. Got Max 5.1 Runtime, Bonjour Print Services, Serial OSC 1.4, and the March 2015 serialosc.maxpat. Serialosc now appear to be running automatically.
I downloaded the monome_test 5 patch. I am able to connect my monome, and the grids on the application respond to my button presses. I am able to produce sound, but I am getting no LED feedback. I tried downloading some other apps including Straw and Inkblot. In those apps, I see my monome in the dropdown menu, but I am unable to click it. If I open the dropdown menu and click the monome then the dropdown menu just closes with nothing selected.
Any idea where I could go from here?