Gallery tree swf not loading

I am using the gallery_tree.fla provided in the Samples for Flash 8 Pro to 
build a small photo gallery, substituting the name of my xml file in this line 
of code in the action script: treeDP_xml.load("bbq_gallery_07.xml"); .


 I used the gallery_tree.xml, substituting my image filenames in the nodes. I 
placed the images, the .xml and the .swf in the same folder. The .swf will play

if I open it on my local machine in a browser, but on the web server, it just 
continues to show the loader but no images or tree.  

 My .xml and Actionscript is attached. Suggestions as to my problem?



 Actionscript:

 var my_pb:mx.controls.ProgressBar;
 var my_ldr:mx.controls.Loader;
 var my_tree:mx.controls.Tree;

 my_pb._visible = false;
 my_pb.indeterminate = true;
 my_pb.setSize(160, 30);
 my_pb.source = my_ldr;
 my_pb.mode = "polled";
 var pbListener:Object = new Object();
 pbListener.complete = function(evt:Object) {
 	evt.target._visible = false;
 };
 my_pb.addEventListener("complete", pbListener);

 var treeDP_xml:XML = new XML();
 treeDP_xml.ignoreWhite = true;
 treeDP_xml.onLoad = function(success:Boolean) {
 	if (success) {
 		my_tree.dataProvider = this.firstChild;
 	}
 };

 treeDP_xml.load("bbq_gallery_07.xml");
 var treeListener:Object = new Object();
 treeListener.change = function(evt:Object) {
 	var treeNode:XMLNode = evt.target.selectedItem;
 	if (treeNode.attributes.src != undefined) {
 		my_pb._visible = true;
 		my_ldr.load(treeNode.attributes.src);
 	}
 };
 my_tree.addEventListener("change", treeListener);

 bbq_gallery.xml:

 <?xml version="1.0"?> 
 <tree>
 	<node label="BBQ_Gallery_07">
 		<node label="DCP_0994" src="DCP_0994.jpg" />
 		<node label="DCP_0996" src="DCP_0996.jpg" />
 		<node label="DCP_0998" src="DCP_0998.jpg" />
 		<node label="DCP_0999" src="DCP_0999.jpg" />
 		<node label="DCP_1002" src="DCP_1002.jpg" />
 		<node label="DCP_1004" src="DCP_1004.jpg" />
 		<node label="DCP_1009" src="DCP_1009.jpg" />
 		<node label="DCP_1011" src="DCP_1011.jpg" />
 	</node>
 </tree>