I noticed that tomatkist reported a similar problem (I'm also using 4.05 GA) several days ago: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=100439 Unfortunately, his solution is what I was already trying (lookup the bean and cast to the biz interface). What is bizarre/frustrating is that the $Proxy1344 class is failing the cast to APLEntityFacade, yet the jndi environment indicates that $Proxy1344 implements APLEntityFacade--so how can it possibly fail to cast to it? Am I doing something wrong? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4014783#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...