External keyboard can no longer play Panel B

[Skulski]

I have a pressing situation, as I´m heading to a gig tonight with my set-up of NS3 and NE4 as an external keyboard. I run the latter as a midi controller only, where NS3 plays Panel A, and the NE4 plays Panel B. This has worked perfect until now, where I no longer can play panel B from the external keyboard.

I have checked the midi connection and midi channels.

Does anybody have any tips for me, that I have overseen?
PS! My 2 year old son might have pushed a button or two that could have affected something, but I have no clue what it could be.

All help would be highly appreciated.

[maxpiano]

Have you checked that the MIDI cable is still OK or tried a different one?

Also, rather than checking some elements, just redo the whole procedure you did the first time, so that you are sure you touch all relevant parameters (of both keyboards).

[Skulski]

The cable works, I can play Panel A from the external keyboard.

No time to go through all now, but a solution is to switch to dual kb on all programs. However, something made me choose not to do so at the time.

[maxpiano]

Have you checked Panel B MIDI Channel (and ensure it is unique, not used by other parts)?