Found The Culprit.
Ok support guys. I have found a bug which causes DeskScapes to run for maybe 5 seconds, then crash.
I use DisplayFusion to easily span wallpapers, or use a different wall on each screen. Well, with DisplayFusion running, DeskScapes crashes. Kill DF, and DeskScapes runs fine.
Windows 10 1803.
I don't know if the problem is with DeskScapes, or with DisplayFusion.
I will alert the people who make DisplayFusion, BinaryFortress. I hope the devs here can help make the two work together?