Cubase 8.5. Can't solo, mute, nor Edit channel


Yesterday I updated to Cubase 8.5 and copied all my setting files from cubase 8 to 8.5

Now I encounter an problem:

I cannot mute, solo or edit a track. When I press the S(olo) button then the M button briefly lights to yellow but nothing else happens (thus I can’t solo a track). The same thing when I press the M(ute) button. When I press the E(dit) button the edit window briefly appears but is directly closed again. I get the same behavior when I does this in the tracks window, or when I do this in the mixer window.

Any clues?


It sounds, like the button is triggered twice for some reason.