Hi there, I am having problems after a session timeout. When a session times out, my web page tries to access a property in an Stateful Session Bean in Session Scope and I get the following Exception: top: Exception getting value of property headline.line1 of base of type : de.greenmiles.website.words.SessionWords$$EnhancerByCGLIB$$a4daa20d ... Caused by: javax.ejb.EJBTransactionRolledbackException: java.lang.RuntimeException: org.jboss.serial.exception.SerializationException: Could not create instance of org.jboss.seam.persistence.EntityManagerProxy - org.jboss.seam.persistence.EntityManagerProxy It seams to me, that this is some follow-up problem, but I have no idea, what could be wrong. The exotic part in my setup is, that the session bean accesses another Stateful Session Bean in Application Scope, that is used as a cache for the data used in the Session Bean in Session Scope. I hope, someone can give me a hint, why the Serialization Exception is happening. Thanks for any help :oliver View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4031269#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...