I tried emailing the support email address listed in the style.css file, but it bounced.
The problem is that the functions.php registers the menu one way
register_nav_menu('main', 'Main navigation menu');
and header.php calls for it using another name
<?php wp_nav_menu( array( 'container_class' => 'menu-header', 'theme_location' => 'primary' ) ); ?>
Change ‘primary’ in the second line to ‘main’ and the custom menu will work.
