Ableton - Orac Start/Stop problem

I’m having an issue trying to get Orac to completely stop when I stop Ableton.
It starts fine when I hit play in Ableton. Then when I press stop, the clock in Orac stops for a second, then starts up again at the default tempo.
I’ve tried with both Clock & Transport & they both seem to be doing the same thing.
In the case of Transport, whilst playing the >MIDI message is shown. Then when I hit stop the message shows for a second, disappears & the clock starts back up again without the >MIDI message.

Any help much appreciated! Hopefully I’m being silly & have missed something.