Oh, dear, I hit the ESC button and my suggestion disappeared.

We use THREE M510s and are adding a fourth, and LOVE the button assignments. One problem: we use a cojple of programs written for Win XPmaybe and they work fine in WIN10. BUT they are just .EXE files parked wherever we put them, and when we want to add button assignments, the progtrams do not show up in the List: Since they never went through the Windows IOnstall process, they do not show up.

PLEASE let us know how to addthem to your List.

Many thanks,
--Terry
Dr T Rowe