Tina, I'm guessing you downloaded JBoss AS 4.2.0 or later, which is not compatible with jBPM BPEL 1.1.Beta3. I'd suggest to upgrade to the newly released jBPM BPEL 1.1.GA. If you care about the details, version 1.1.Beta3 was written against version 1.4 of WSDL4J. This is the WSDL4J version included with JBoss AS 4.0.5. In JBoss AS 4.2.0 and later, WSDL4J was upgraded to version 1.6. Among other changes, method close() was added to interface javax.wsdl.xml.WSDLLocator. This change broke jBPM BPEL 1.1.Beta3 because class org.jbpm.bpel.xml.ArchiveWsdlLocator no longer implemented all methods of the previously mentioned interface. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4110044#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...