I have deployed the my application into the Jboss AS. While deploying(start) and redeploying(stop) my application am getting the following deployement exception.

JBOS/JBOSS 201 ALERT AUG05 11:39:17
2009-08-05 11:39:17,917 WARN [org.jboss.web.WebModule] Stopping failed jboss.web.deployment:war=xlatool.war,id=-806858549

org.jboss.deployment.DeploymentException: Error during deploy; - nested throwable: (javax.management.InstanceNotFoundException: jboss.web:type=Engine is not registered.)
at org.jboss.web.AbstractWebDeployer.stop(AbstractWebDeployer.java:436)
at org.jboss.web.WebModule.stopModule(WebModule.java:100)
at org.jboss.web.WebModule.stopService(WebModule.java:66)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStop(ServiceMBeanSupport.java:315)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:247)
at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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)
at $Proxy0.stop(Unknown Source)
at org.jboss.system.ServiceController.stop(ServiceController.java:508)
at sun.reflect.GeneratedMethodAccessor8499.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy163.stop(Unknown Source)
at org.jboss.web.AbstractWebContainer.stop(AbstractWebContainer.java:498)
at sun.reflect.GeneratedMethodAccessor8502.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy164.stop(Unknown Source)
at org.jboss.deployment.MainDeployer.stop(MainDeployer.java:667)
at org.jboss.deployment.MainDeployer.stop(MainDeployer.java:659)
at org.jboss.deployment.MainDeployer.undeploy(MainDeployer.java:638)
at org.jboss.deployment.MainDeployer.shutdown(MainDeployer.java:516)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.system.server.ServerImpl$ShutdownHook.shutdownDeployments(ServerImpl.java:1058)
at org.jboss.system.server.ServerImpl$ShutdownHook.shutdown(ServerImpl.java:1033)
at org.jboss.system.server.ServerImpl$ShutdownHook.run(ServerImpl.java:996)
Caused by: javax.management.InstanceNotFoundException: jboss.web:type=Engine is not registered.
at org.jboss.mx.server.registry.BasicMBeanRegistry.get(BasicMBeanRegistry.java:523)
at org.jboss.mx.server.MBeanServerImpl.getAttribute(MBeanServerImpl.java:550)
at org.jboss.web.tomcat.service.TomcatDeployer.performUndeployInternal(TomcatDeployer.java:441)
at org.jboss.web.tomcat.service.TomcatDeployer.performUndeploy(TomcatDeployer.java:418)
at org.jboss.web.AbstractWebDeployer.stop(AbstractWebDeployer.java:422)
... 59 more