I had mentioned earlier that I had cleared my mind of the wicket related stuff I was working on. I had kept the files intact and today I had the opportunity to tinker with it a little bit. I started tomcat and browsed to the link and it worked like a charm. I might be onto something here. A treetable component capable of editing XML in your browser could have many uses in these web 2.0 crazy times. RSS comes to mind immediately but any XML could be edited. Here's a screenshot of my editable XML treetable showing a ruleML file.