I have web module dependant on MBean (plain mbean, not JBoss Service)
with jboss-web.xml like

<jboss-web>
 <class-loading>
 <loader-repository>dot.com:loader=MyLoader</loader-repository>
 </class-loading>

 <depends>my.service.dot.com:service=MyService</depends>
</jboss-web>

upon redeployment of referenced MBean a got

java.lang.NullPointerException
 at org.jboss.web.WebModule.startModule(WebModule.java:82)
 at org.jboss.web.WebModule.startService(WebModule.java:61)
 at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
 at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
 at sun.reflect.GeneratedMethodAccessor106.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:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
......

If web module undeployed, and then deployed again everything works fine.
How can i fix this?

JBoss is 4.0.4.GA
Sar dependant on this mbean works just fine

Thank you.