With this change, i was able to move forward to the point where the JBoss-5 GA server was being started from the maven-jboss-as-control-plugin. This maven-jboss-as-control-plugin uses 1.0.0.GA version of the jboss-server-manager: | <version.org.jboss.jbossas_jboss-server-manager>1.0.0.GA</version.org.jboss.jbossas_jboss-server-manager> | <!-- JBoss AS Server Manager --> | <dependency> | <groupId>org.jboss.jbossas</groupId> | <artifactId>jboss-server-manager</artifactId> | <version>${version.org.jboss.jbossas_jboss-server-manager}</version> | </dependency> Unfortunately, the jboss-server-manager fails to start the JBoss-5 GA server. It fails with: Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: | java.io.InvalidClassException: org.jboss.security.auth.callback.SecurityAssociationHandler; class invalid for deserialization | at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:282) | at sun.rmi.transport.Transport$1.run(Transport.java:153) | at java.security.AccessController.doPrivileged(Native Method) | at sun.rmi.transport.Transport.serviceCall(Transport.java:149) | at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466) | at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707) | at java.lang.Thread.run(Thread.java:595) | Caused by: java.io.InvalidClassException: org.jboss.security.auth.callback.SecurityAssociationHandler; class invalid for deserialization | at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:571) | at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1552) | at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466) | at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699) | at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) | at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908) | at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832) | at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719) | at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) | at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348) | at org.jboss.invocation.MarshalledInvocation.readExternal(MarshalledInvocation.java:665) | at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1755) | at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1717) | at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) | at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348) | at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:290) | at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:279) | ... 6 more | Based on this thread, http://www.jboss.com/index.html?module=bb&op=viewtopic&t=146034&a..., the fix is in 2.0.2.SP3 of the org.jboss.security module. The jboss-server-manager in 1.0.0GA version as well as in trunk uses <version.org.jboss.security>2.0.2.CR9</version.org.jboss.security> I have locally updated the pom for jboss-server-manager and created a 1.0.1-SNAPSHOT to use in the maven-jboss-as-control-plugin. With these changes, i now have the server statup/stop/deploy working through the Maven plugin. To summarize - The 1.0.0 GA version and trunk of jboss-as-server with JBoss-5.0 GA fails. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4195322#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...