Modern Tribe Events Calendar Plugin Generating Javascript Error

We are having problems with a javascript conflict with the Highend theme v2.4.2. Please see:

http://circusjuventas.staging.wpengine.com/classes

Set some filters then scroll down and click ‘Reset Filters’. It does clear the checkboxes but the filters no longer work.

The error we get is: ReferenceError: Can’t find variable: tribe_events_bar_action

We switched to WP Twenty-Fifteen theme and the error went away so there seems to be a conflict with your theme.

Thanks.

Peter