I followed the instructions from the Tribe website for adding breadcrumbs to a Genesis theme (http://tri.be/tutorial-integrating-the-events-calendar-w-genesis).
Breadcrumbs are not appearing on any of the event pages after I made the appropriate code changes. Funny thing, though, is that breadcrumbs did not appear on the events pages before, either. They were fine on all other non-event pages. So I am thinking the problem is just getting breadcrumbs to appear on these pages at all, whether the changes from the tutorial are applied or not.
I am using the free version of The Event Calendar with the Metric Genesis child theme, BTW