Try reinstalling silverlight,download Silverlight. http://www.microsoft.com/getsilverlight/Get-Started/Install/Default.aspx
When the download is complete, click the installer in the downloads bar at the bottom of Chrome.
Follow the on-screen instructions to install Silverlight.
Select “Enable Microsoft Update” checkbox to make sure the plug-in stays updated.
I cant find the boxing saying “Enable Microsoft Update”, under playback it says "Enable download and updates to components required for protected content playback."