Editor and Slim Phatty - What am I doing wrong?

I have the Little Phatty Editor and a Slim Phatty, and was told they would work together.

Just a couple of weeks back I downloaded the latest update that introduces an AU version along with a bunch of updates. I had the previous version but never got around to setting it up.

In the new version, under the settings I have “Slim Phatty” set for the MIDI input and output device. I have tried using Logic and Ableton as hosts for the AU plug-in. When I changed things on the editor, nothing happens. I was able to get a few things, like “get patch” worked once.

My Slim Phatty of course works fine for receiving MIDI note data over the USB.

I also upgraded the Slim Phatty to the latest firmware.

What am I missing here?