Unfortunately stupid (that would be me) did NOT "the obligatory backup . . .." I should of known better. The answer to your next question is two fold. It is a CTD, and if I choose to just quit it I brought back to DESKTOP and can do what ever. For (grins?) this morning I tried the "continue anyway" or what ever it is called. BAD BOY! Let a big BLACK box covering most of my screen and I had ti restart my computer. Going to go over now and report. For the curious here is the error:
MapObjectBase SetBoundLayerID> InvalidLayer id 255
plus a whole string of numbersl
Side note: I tried a couple of things just now, like starting up one of the sessions, built in, even one small one I had made of the KS2 route. My BIG CRASH is for a session I had made in a CLONE of the KS2 route.