I have the problem, that my PC3 K8 creates a never ending series of program changes if I program a switch to send a program change which the position "on" as entry state in a setup.
It only happens with program changes as "on control" (not with another midi event)
and it stops when I hit the switch once.
But selecting the SetUp (switch lights up) there is a permanent stream of the same event.

(I tried a total reset including software restore etc., I even have the button panel renewed)

Anybody has this problem?