Unfortunately my unit seems to have a “sticky” trig key nr. 6. It feels and sounds like all the other trig keys, but seems to be pressed all the time. So if I push trig key 6 at any time the unit becomes unusable, no more stop, play record etc. If I restart, everything is fine until I press trig 6 again. Test mode shows key 6 pressed also all the time. I did a factory reset. Still same error. Midi is not connected.
It looks like you have a defective unit, you should get it replaced.