Edge 1.3.9 after Z probe, runs off in +X direction after Resume

That says it!. Edge 1.3.9 cut normally.
At M0 pause I do a tool change and re-zero Z.
I hit Resume
Carriage heads way off in the +X direction, well beyond the work piece
I have to abort job
I edit the completed part out of the file, then run the rest from that file

Mac OSX, Longboard ver 1

Also later I see this interesting time remaining after stopping a job and then restarting it from the beginning ( it is counting to increasingly negative numbers):