Thank you. I am new to this so I am not sure if there is a bug in the theme or if I am doing it incorrectly. I have just posted in the Good Layers forum.
I created 2 menus in Appearance -> Menus. 1 named main and the other named top menu. I select main under the main navigation menu and top menu under top navigation menu and save it. Each time I visit that setting again the drop downs are empty.