I want to use Ableton Live 9 Suite to play some background tracks while performing live. One track is configured to send midi notes to an external drum machine. This drum machine have a built in bass line that plays through a bass amp. I'm just interested in the bass line, wich is triggered on channel 8 of Ableton (and other sequencers). The midi port (midi to USB device) is visible and set up as output on the track that I want to play through the bass. Everything seems set up correctly. I can see the lights in Ableton when notes are playing, but the drum machine is not receiving this notes. If I close Ableton, open Cubase SX (a 2004 version) and perform the same task everything works fine. Then I close Cubase and restart Ableton and the problem is solved, Ableton is capable of triggering notes in the drum machine. What's going on? I know this is quite a basic task. I did it for years with Cubase without any problems.