Perhaps a small one - yet gratifying. After several starts and stops, I managed to get the SofStep to work with Ableton Live using the drum demo. Why they had trouble communicating at first remains a mystery, but ultimately it worked.
I then added a midi track which I controlled with an Oxygen 3g 49, and an audio track which I used to record my Micron-Kaossilator-Kaoss setup. Everything worked as expected. Now I have a starting point to use my own loops. I hope to be able to use this setup for the first time on April 16th at the Wonder Valley Experimental Music Festival!