I undestand but if the prog is not on the list (as me), you can force open by the button "travel" (?) folowing the double clic in windows :)
And if you enable "always open this sort of file with this prog", an icon with your "Yellow light" icone is created !
And that works perfectly, for this time I have try all the manipulation :)
Each time I save a file from moi, the 3dm file + moi's icone is created on my desk :)
And start launch directly when I clic the new saved name file iconed :)
Even Moi has not the first automatic links information for the 3dm windows shell (that you want to do) after my little manipulation that pretty works ....
So now I don't understand the problem :D

Bon courage, whishing that Michael found something for you :)

Just curious that work for me and not for you!
Mystery of the technology :)

:):):)
You right! The screen of MOi is like a desert :D
I am too trusting in the technic!
One more time I have not seen the result, just that Moi launching was suffisant for me !

Now I full understand the problem :D
Hopfuly, it's not a big disagrement because you can load your file by the menu!
This time I have seen my object :D