When I try to deploy one of my ear files, I see the following error on the console:

19:22:52,747 ERROR [MainDeployer] could not create deployment: file:/usr/local/jboss-4.0.1sp1/server/tradenexus/tmp/deploy/tmp3955trade-engine-singleton-1.0.ear-contents/ev-aptsimulator-1.0.jar-contents/jboss-service.xml
org.jboss.deployment.DeploymentException: org.jboss.mx.modelmbean.XMBean.<init>(java.lang.Object, org.w3c.dom.Element, java.lang.String); - nested throwable: (java.lang.NoSuchMethodException: org.jboss.mx.modelmbean.XMBean.<init>(java.lang.Object, org.w3c.dom.Element, java.lang.String))
at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:143)
at org.jboss.system.ServiceController.install(ServiceController.java:200)
at sun.reflect.GeneratedMethodAccessor42.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:144)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
... many more

The structure of this ear file is as follows:
META-INF/
META-INF/MANIFEST.MF
META-INF/jboss-app.xml
META-INF/application.xml
netrade-7.0.jar
calathus-1.0.jar
ev-aptsimulator-1.0.jar
token-lock-1.0.jar
schemas-1.1.jar
apt-gateway-1.0.jar
ev-kasbank-1.0.jar
stax-1.1.1-dev.jar
ev-simulator-1.0.jar
cache-1.1.jar
xbean-2.0.0-beta1.jar
stax-api-1.0.jar
epistula-1.0.jar

The deployer seems to complain about the jboss-service.xml (check attachment) file (packaged inside the ev-aptsimulator-1.0.jar file). However, this ejb deploys fine when I remove the jboss-app.xml (check attachment) from the ear file.