Flash is not loading

I am using Dreamweaver and Flash CS4.I created a flash swf and a preloader swf and I published.The published html is ok.

I imported the preloader swf into an html page in Dreamweaver.
When tested, the preloader stops at about 99-100% and the main swf is not showing.
But in the flash published html, there is no problem.
What is this?

(I posted this here because I think this is a client side error.)