As WGTadmin says, I think you need to check the state of your flash player.
To do this type about:plugins into Chromes address bar and hit enter.
If the plugin details are not showing click the details link...
If, under Adobe Flash Player, you have two flash players listed, you need to disable one of them because having both enabled may cause flash to crash...
The top highlighted flash player in the above picture is Chromes built-in Pepperflash player which most people will disable, so if you do have two flash players then I suggest you disable Pepperflash.