Eventbuilder theme - jquery problem?

wordpress

#1

Drop down menus (sub-menus) not appearing in some pages.Also “back-to-top” button not appearing in the same pages that sub-menus not appearing.

I see an error (with Firebug):
“Uncaught TypeError: Cannot read property ‘settings’ of undefined”. - jquery.validate.min.js:2

pls advise

thank you