I'm having the same problem as well. it loads sometimes, but not consistent. just wanted to confirm you are not alone!
Yes, i have experienced this too on Safari on the Ipad. Removing the pre-loader is one way round it but I appreciate that this isnt an ideal solution.... Is there a proper fix for this Adobe Staff?
Your Edge animation doesn't load on Chrome browser on my PC either... It works only after I reload the site.
Just to let you know. Sorry but I have no solution for it. Try removing preloader as Akrilic suggested and see what happens.
Your animation doesn't load initially in Safari 6.0 on Mac, either - until the page is refreshed.
I notice that you have a link to a stylesheet within the Adobe Edge Runtime block in your head section. If you place the link outside of that block, do you still see the same loading problem?