Hi Ed, There was no SimState.hbm.xml, so I created one in the sim directory of both the src and target. It was still no good. I've only seriously started learning the J2EE stack in the last few weeks and i'm in so called "XML Hell". I'm not sure what xml files go where, and what xml tags to use in specific xml files. My SimState.hbm.xml file looks like this: | <?xml version="1.0"?> | <!DOCTYPE hibernate-mapping PUBLIC | "-//Hibernate/Hibernate Mapping DTD 3.0//EN" | "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> | | <hibernate-mapping auto-import="false" default-access="field" > | | <subclass name="org.jbpm.sim.SimState" | discriminator-value="SS" | extends="org.jbpm.graph.def.State" /> | | | | </hibernate-mapping> | It still doesn't make sense why the SimState mapping would cause things to break in the Junit test. I looked at the jbpm-jpdl.jar in my web-console.war file and the SimState mapping is there but everything works just fine. So I only see the errors in the junit tests. thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4075328#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...