Same problem here and a live in a few days…
Did you find a solution ?
Did you recently load samples? That’s what happened to me. Try a fresh project and see if it changes anything. Also, delete recent samples.
Yes exactly the same, the problem appeared after loading 10 new samples. If I delete these few samples it works again ? 
I juste checked and the samples that made the issues even don’t appear into my samples base… I can’t delete them…
Maybe. Might have corrupted the project in which case you have to either dump patterns and kits to sysex and reload or wipe altogether.
Another thing. When I activate the pads with solo mode (retire + pads) it works …
Same here, I be honest i loaded the zip file into it - but didn’t respond that it’s getting data. So I recognized/aborted and loaded the sysex file into it. Since changing the Project, everything works fine. But the saved buggy Project does not work anymore. As I read this threat, i thought about major changes which ar not corresponding with the actual unsaved project.
So be alerted everyone, to save your project before updating and reload afterwards…!