Fatal Error when trying to publish Events+ event

I am not able to view the event page after publishing. Also, it took about 5 tries to get the date to save correctly. I ended up having to click the No Start and No End times to get it to work. Otherwise after saving, it would make the year 1970 and limit the dropdown options to 10 years around 1970.

http://advancingcommunities.us/mesamedia/events/2017/04/first-intergenerational-hopi-pottery-festival/

Fatal error: Call to a member function get() on null in /homepages/34/d548214144/htdocs/wp-content/themes/mesaMedia/header.php on line 10