Menu Not Loading Properly; Javascript error?

I have recently upgraded a few plugins and template for our website. In doing so, it appears the Menu has now begun to fail to load properly. The menu has sub-menu which should flyout upon mouseover. The menu doesn't work at all on mobile where the menu is collapsed.

Any help would be appreciated. I have played with the minifcation (Hummingbird) settings, and even disabled it to no avail.