Xml and css

Hello all,
I am new to the forum; I used to do more work in Flash and am getting back into it, so I am a bit rusty. That being said, I am trying implement the same principle as in this thread -http://www.kirupa.com/developer/mx2004/css.htm

but everytime I try to load my own css, I get the ‘error loading css’ message. I have the flash movie and the css in the same folder, I even tried to put it on a web server, all to no avail. Is there something I am missing that would cause my swf to not see the css file? This seems like a really easy thing to do and its driving me crazy!! Thanks for any help.