Problem getting XML data to load on release

I’ve been looking at this code now for months and I am just not understanding why I cannot seem to get this to work. I have a gallery that loads in a series of thumbnails. What is supposed to happen is that you click on a thumbnail and a larger image of that thumbnail appears. At the same time a second thumbnail image loads in a different movieClip while simultaneously loading a series of dynamic text fields. I think it sounds more complex than it really is.

I can get everything to load correctly initially, but when I click to view any other thumbnail only the larger image loads. The data in the XML file doesn’t seem to load the secondary thumbnail or the dynamic text fields. I have included my .fla file and also my xml file. I am hoping someone can take a look and tell me what I’ve done wrong so I can try and make this work.

I am using Flash CS3 with AS2.0. Thanks in advance for anyones help!