I am Makarand P from the Dell Social Media and Communities team.
With regards to your issue, i feel it is an issue with the flash player or the browser. Do you face the same problem on other browsers. Try using other browsers like Mozilla Firefox, Opera, Google chrome etc. If you face the same problem, please uninstall the flash player and reinstall it from the Adobe website.
Website to download Adobe: http://get.adobe.com/flashplayer/
Kindly revert for further clarifications,
Thanks and regards,
Dell Social Media and Communities Responder.