Applies to: Launchpad Pro
There is an issue in Ableton Live 9.6.1 where MIDI tracks will not correctly accept MIDI from Launchpad Pro's user mode. This means that you will be unable to trigger instruments or get MIDI feedback to create a light show.
You can restore the correct functionality by downgrading to the previous version of Ableton Live (9.5) from your Ableton account. There is also a fix for this issue in the latest beta version of Ableton Live available at https://www.ableton.com/en/beta/ (separate account required).