Im getting an error int the class ProcessImageTag in the line:
XPath xPath = new DefaultXPath("node[@name='"+ nodename +"']");
ERROR [[jsp]] Servlet.service() for servlet jsp trew exception java.lang.NoClassDefFoundError: org/dom4j/xpath-DefaultXPath
Ive found the solution, the driver that cames with the server in Starters kit is an old one.
I had to copy the one in the source of Jbpm.
I also had to do that with the Jaxen driver