Hi Carlo, please have a look at http://jira.jboss.org/jira/browse/EJBTHREE-1192 The (rather unprofessional) comment on the class reads * Don't ask. Try observing a volcano eruption from 1 mile or outrun * a lightning bolt. It's safer. * * org.jboss.aop.Dispatcher can handle only certain types. which gives me no indication on how to fix this. A basic JAX-WS smoke test in the EJB3 test suite would have picked up this invalid change. Do you have/run smoke tests that cover EJB3 endpoints? cheers -thomas -- xxxxxxxxxxxxxxxxxxxxxxxxxxxx Thomas Diesler Web Service Lead JBoss, a division of Red Hat xxxxxxxxxxxxxxxxxxxxxxxxxxxx