Sometimes on exit from offline a Microsoft error GUI is generated. Good thing is, now clicking cancel, cancels it. No more task manager. I don't know if this was related to adjusting something on my offline terrain. I was in and out of both applications back to back making the adjustments, then seeing how they worked on the terrain, then making more adjustments.
In the past with the alpha\beta, this happened from time to time with different patches once or twice exiting out. Then it never happened again with that patch. It seems to have cleared up for this patch.