MPE Synth cuts out when MPE enabled

General JUCE discussion
1

I have a user with a Seaboard Rise 49 reporting the audio in my synth completely cuts out when they enable MPE.

I use MPESynthesiser and enable MPE like such:

    MPEZoneLayout zones;
    zones.setLowerZone (15);
    instrument->setZoneLayout (zones);
    setPitchbendTrackingMode (MPEInstrument::lastNotePlayedOnChannel);

And it seems to work with my Seaboard block. Amy I doing something wrong or do they need to change a mode on their Seaboard?