I apologize if this has already been pointed out. But this has been working for me the past day or two as I exit the program several times to take breaks. Usually it’d crash more times than not when I do that, but this has been working. I have found that when I close the project, wait a few seconds and then attempt to close Cubase 8 Pro, it never crashes. At least, not so far. It appears to really crash when I try to close the program immediately after closing a project (or closing a project and exiting at the same time).
So basically, can some folks that have experienced this try it? Just close a project, wait about 5 seconds and then exit the program.