Smart YouTube Plugin does not work on Triden, Nelo, or Dixi Themes on IE Browser

We are trying to use the widget for Smart YouTube on the home page of the Triden, Nelo, or Dixi Themes.

The video displays fine in Firefox. But on IE 7 the video does not display at all.
See example:

We tested this plugin on other themes in our Wordpress MU environment and it works in both IE and Firefox.
See example:

Note. We also deactivated all of the plugins except for SmartYouTube to make sure it was not a conflict from another plugin.