Well, I just did. The only change that I’ve noticed is that now my MC Client window won’t open. 
So removing the MC from the surfaces window, as the exit crash work-around, is now not an option. BTW, it didn’t work for me anyway. But it seemed to insure that the MC would fire up consistently each morning with N6. So, I used it anyway. But, as I said, now it’s currently not an option.
The good news there is that the exit crashes don’t seem to be effecting the MC’s ability to re-connect on start-up with N6 or N6.5. The bad news is that now I can’t program anything in the MC because I can’t access the menus!!
I rolled back to Eucon 3.0 since you mentioned that you found it the most stable. Should I roll forward to 3.1.2 or 3.1.3 for N6.5? 