I am attempting to create a main menu that is global, appearing on all pages horizonally. In addition, for select pages, there will be an additional horizontal sub menu directly below the main menu. Not an uncommon approach - see below
Main menu: Home | About us | Contact Us
Sub menu: Corporate Info | Location| Support
I have attempted to include a menu template but receive the following error:
string(80) "Smarty error: unable to read resource: "module_file_tpl:MenuManager;top_nav.tpl""
In bold is the template that I created based on info found in the wiki. I'm not new to web development, php, or smarty so I'm frustrated to say the least and feel like I'm missing something very obvious.
Any help pointing me in the right directory would be great

Thanks