I created a simple client code (standlone java app) to invoke an ESB service. The client can't find the service. The ESB is deployed correctly. The service category and name are correct. The service can't be invoked from the server side. I guess I am missing something Registry look up related jars, but I don't know what they are I need.

The excedption trace:

java.lang.NullPointerException
at org.jboss.internal.soa.esb.services.registry.JAXRRegistryImpl.findService(JAXRRegistryImpl.java:415)
at org.jboss.internal.soa.esb.services.registry.JAXRRegistryImpl.findEPRs(JAXRRegistryImpl.java:272)
at org.jboss.internal.soa.esb.services.registry.InVMRegistryInterceptor.findEPRs(InVMRegistryInterceptor.java:133)
at org.jboss.soa.esb.services.registry.RegistryFactory$HeadRegistryInterceptor.findEPRs(RegistryFactory.java:229)
at org.jboss.soa.esb.listeners.RegistryUtil.getEprs(RegistryUtil.java:226)
at org.jboss.soa.esb.client.ServiceInvoker.loadServiceClusterInfo(ServiceInvoker.java:433)
at org.jboss.soa.esb.client.ServiceInvoker.(ServiceInvoker.java:157)
at org.jboss.soa.esb.client.ServiceInvoker.(ServiceInvoker.java:138)
at org.jboss.soa.esb.client.ServiceInvoker.(ServiceInvoker.java:180)
at com.cgi.sacwis.interfaces.client.common.CallTester.main(CallTester.java:20)