What program shows the "main screen"? Where is "Menu"?
After making the change to non Graphical menu in the nvaigator program, the Menu button that is positioned in the upper right of the navigator window does not react to touches or presses. That is the problem. The navigator program starts but the Menu button is dead.
Thanks for that. It's a lot faster than doing an un-install and reinstalling navigator.
However it does not fix the problem with navigator's dead Menu button after setting non Graphic menu. It still is dead after changing the setting. Oh well, I guess I can live with it.