SWF doesn't appear until fully loaded
I'm embedding .swf files in my pages but the problem is, they don't actually become visible until the entire file is loaded. All of the preloaders are negated and the window remains white until the whole file is present.
This is for a redesigned website- on the old site I loaded the .swfs in popup windows with standard embed code. The preloaders worked fine there so I know it's not a preloader issue. On the new site I started embedding them with swfobject and ran into this problem. However I then replaced the swfobject code with the code I used in the old site and still had this problem.
So I'm trying to think more abstract now- some sort of server structure issue? permissions? settings? config/ini stuff?
Are there any common known reasons as to why a .swf file wouldn't appear on the page until fully loaded?