Thank you Max.

I saved my current Moi.ini file, by renaming it.
I was unable, so far, to locate default Moi.ini, but saw one called MarvsMoi.ini, from 2015, and renamed it Moi.ini.

Success running the truchetSweep3 nod, about 6 seconds., and apply works, 0.97 version.

So something in my previous moi.ini file causes the previous failure...

- Brian