After minor updates to a website, the navbar submenus no longer display. The mouseover fx still work, but there's no submenu. I created a new dummy navbar by just downloading it and adding a few submenu items, and in previews there is still no submenu display.

This problem has paralyzed my biggest client's main site (http://icon-art.org), and I can't come up with a fix. Any help would be much appreciated. It seems to have happened since the last update done with recent 365 versions.

Thanks in advance,

Allen