The new version has some newer interceptors, yes. The relevant ReplicationInterceptor is still there though, so it should be fine. Do you see any exceptions when you try and replicate something? Are you using this within JBoss AS? Did you make sure the new jboss-serialization.jar which ships with JBoss Cache 1.4.0.SP1 is in your classpath? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3980107#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...