@tosti007 Well, it’s the
npm install
that failed. But updating npm solved the issue since I had npm version 2.x.x (I think, not sure since I did not save the command prompt before the update). From the grunt dev page, higher npm version only raises warning for lower version number requirements and does nothing for
"grunt" : ">=version_number"
Which is good.
Forgot to report that the solution there worked when I tested https://forum.magicmirror.builders/topic/971/dependency-problems/6
Thank you for responding promptly to my post !