The Zimlet "Contact Organizer" works great in firefox but doesn't work with Internet explorer.

1. Does anyone else use this and have the same problem or did I do something wrong?
2. Is there a work around for this issue or was it designed not to work with IE.

I tried a few PC's with IE8 and IE9 all end up with the same issue. The screen has a grey bar across where the contact organizer window would normally be. Any information about this would be helpful.