Html5 banners not showing

Hi, 

I have a html5 banner file that worked a coulple of days ago. This file and all other files i have made is now showing up blank in crome, safari, through the test movie in Animate and in Dreamwevers preview if i open the html file. I have tried the file localy on me mac, on my work server and on other macs, but all with the same problem. What could be the problem? never experienced this before.