Best Answer James B† , 13 June 2013 - 11:33 PM
In your new menu you hadn't set up any items to be a child page in the custom menu - http://screencast.com/t/IWEaWgHO
They need to be indented to the right to show as a sub nav, see this image compared to the screenshot above - http://screencast.com/t/VJBrgTnu
Indent the menus you want to display as a child page by dragging to the right until they click into place.
I've left authors link in place to show you, you can move that back to the left to make it a parent item in the menuGo to the full post