Problems loading random swf.'s

Hello there-

First of all, I just began using flash 1 week ago. I have a very simple problem that probably has a very simple solution; I need to load a random swf. everytime somebody visits my site, or refreshes their browser. I’ve looked everywhere for an answer to this problem, have used the source provided by this website, and am having the same problem. Interestingly, I used this source in Flash MX and had no problems. Only when trying to use it with Flash MX 2004 did it cease to work. Before it worked beautifully. Now I save it, without syntax errors of course, all it does is provide a blank screen/no movie, even though the paths and filenames are correct. Does anybody have a script/source that works for them?

Any help is appreciated.