Same thing happened to me yesterday! I use Cubase 8.5 and I suspect either a Windows 10 issue or an Elicenser that wont give me full rights.
I reinsalled Cubase 8.5, the 8.5 update and the 8.5.3 update. I ran the maintenance task twice in Elicenser.
I was using Cubase normally 2 days ago. This came out of the blue. Is there a way I can retrieve the track controls settings? The panel is blank and Cubase crashes when I click ‘‘OK’’
I am pretty well dead in the water until I resolve this.
Robert (even considering changing my motherboard to put an end to sporadic Win10 bluescreens)