video wont start

I have tried to play several episodes online  but they wont start (not just this one)

http://xfinitytv.comcast.net/watch/Revenge/7878683525689254112/111633987523/Endurance/videos

My Device Information My Zip Code: 47905 My Cable Provider: Comcast Lafayette Digital Use Dac: false My Conroller ID: Unknown My Map ID: Unknown My Persona ID: 1 My myDVR Manager Status: activated My Set Top Box Names: DVR 1 My Watchlist setup: false Facebook Watchlist Syncing: false Facebook Connect: false My public IP address: 184.17.127.31 My operating system: Windows -  Windows NT 6.2 My web browser: Explorer 10 - Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0; .NET4.0E; .NET4.0C; .NET CLR 3.5.30729; .NET CLR 2.0.50727; .NET CLR 3.0.30729; MATBJS) My system type: Desktop computer or other device My Silverlight version: 5.1.20913.0 My Flash version: 12.0.0.38 Javascript&colon; enabled                    <noscript>disabled Cookies: Enabled (1679 Bytes).