Symbols disappear when I view the published animation in Firefox

I created a rich media ad using Edge Animate.  I published it and tested it on Firefox, Chrome and Safari.  It appears fine on Chrome and Safari but when I view the expanded portion in Firefox all of the symbols on the main stage disappear.  Any idea why? Looking at the source code it is all still there, it just isn't showing up.  Please help!

Here is the link to the ad on a test page:

http://www.capitalpress.biz/html5ads/expandingcubes/pioneerwest/PioneerWestTest.html

Thanks,

Brandon