Page Requires AC_activeruncontent.js?

I’ve got this really cool fountain animation (it’s basic, but I like it…) uploaded to a googlepage, but when I upload the html file that flash automatically creates, and try and go to it, it says:

This page reqires AC_activeruncontent.js

Any easy way to fix this?

(I’ve been doing this for a while, just upgraded to AS3 and don’t know what I’m doing wrong…)