Feedback Button Crashes Video

Browser: Chrome Version 26.0.1410.65

URL: http://www.gamification.co/gsummit-2013-sf-videos/nir-eyal/

Problem: When click on the feedback button on the right hand side, it crashes the video display. The audio runs in the background and the new feedback window doesn't load. I had to reload the page in order for the video to work and provide feedback in an entirely different tab.