I first registered for an event, then within the registration confirmation screen I clicked the edit link under one of the attendees. I edited the email address and clicked submit and received this error:
Fatal error: Call to undefined function espresso_update_primary_attendee_total_cost()
The espresso_update_primary_attendee_total_cost() function is defined in event-espresso/includes/functions/attendee_functions.php starting on line 134. It may help to install a fresh copy of Event Espresso, which you can download from your account page.
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