Simpleviewer/KML Flash Embed IE Bug

Recently my simpleviewer galleries have stopped displaying in IE on any PC. They used to work but visitors to my blog now say that they don’t anymore. They work in any browser on my Mac and I haven’t changed anything to the pages that would make them stop working so I’m lost as to what the culprit could be. I’m using the latest version of the KML plug-in and WordPress 2.0.1. Has anyone had a similar problem? Help would be greatly appreciated as a majority of my readers can no longer view my pictures. . .