News Ticker XML "undefined"

I am trying to make my own news ticker from the News Ticker tutorial. When I export the .swf file onto my website, I keep on getting an “undefined” error. I have my own .xml file placed in the same folder as the Flash file is. Here is the code I’m using below:

xmlData = new XML();
xmlData.ignoreWhite = true;
xmlData.onLoad = loadXML;
xmlData.load(“news.xml”);

Can someone please explain to me why this is happening?