Doesn't work unless alone in project

[Subject]

I'm running DSP in ableton, and it works great, as long as it is the only thing running in ableton. If there's more than these two tracks (the audio input and midi output) then the midi doesn't seem to find the DSP output.

Adding the DSP into another project, it won't work.

Running it alone it will,but as soon as I add anything else it stops between audio and midi tracks. The audio seems to work but the midi no longer responds to it.

Ableton 10 Suit, Win 10.

Thanks,

Subject.

[Rob]

Are you talking about DSP Trigger? Have you enabled the Master MIDI out?