I didn't pause updates after reverting to the Fall Update, so this morning I had to re-install the May Update and later today I needed to install a May Cumulative Update. I had serious problems with it before and other people must have also(which was expected) so we got (presumed)bug fixes very soon after getting new features. After some fiddling, I was able to get back here again. It is working OK at this time, but I am waiting for problems to pop up.