Hi, I'm running JBoss 4.2.2 and deployed an EJB and a Spring application inside a HASingleton. I also have a Tomcat application that can successfuly use the EJB. The problem I'm facing is between the HASingleton and the EJB. When the HASingleton tries to use the EJB, the following stack trace is shown in the log. Caused by: javax.ejb.EJBException: Invalid invocation, check your deployment packaging, method=public abstract com...AppRemote com...IAppHomeRemote.create() throws java.rmi.RemoteException,javax.ejb.CreateException at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invokeHome(StatelessSessionContainer.java:175) at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invokeHome(CachedConnectionInterceptor.java:189) at org.jboss.ejb.plugins.CallValidationInterceptor.invokeHome(CallValidationInterceptor.java:56) at org.jboss.ejb.plugins.TxInterceptorBMT.invokeHome(TxInterceptorBMT.java:69) at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invokeHome(StatelessSessionInstanceInterceptor.java:98) at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:145) at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:132) I'm almos sure that the EJB is well configured since Tomcat can use it. But I do not know what might be happening with the HASingleton. Best Regards Rodrigo Baquero View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4170453#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...