NullPointerException while shutting down EmbeddedJBoss

NullPointerException while shutting down EmbeddedJBoss:

ERROR AspectDeployer - Error during undeploy: vfsfile:XXXXXXXXXXXXXXXXX/classes/deployers/ejb3-deployers-beans.xml
java.lang.NullPointerException
at org.jboss.aop.deployers.AspectDeployer.undeploy(AspectDeployer.java:144)
at org.jboss.deployers.vfs.spi.deployer.AbstractVFSRealDeployer.internalUndeploy(AbstractVFSRealDeployer.java:54)
at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.undeploy(AbstractRealDeployer.java:112)
at org.jboss.deployers.plugins.deployers.DeployerWrapper.undeploy(DeployerWrapper.java:187)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doUninstallParentLast(DeployersImpl.java:1072)
at org.jboss.deployers.plugins.deployers.DeployersImpl.uninstall(DeployersImpl.java:1027)
at org.jboss.dependency.plugins.AbstractControllerContext.uninstall(AbstractControllerContext.java:333)
at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:1323)
at org.jboss.dependency.plugins.AbstractController.uninstallContext(AbstractController.java:1009)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:627)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:411)
at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:423)
at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:506)
at org.jboss.deployers.plugins.main.MainDeployerImpl.shutdown(MainDeployerImpl.java:543)
at org.jboss.embedded.Bootstrap.shutdown(Bootstrap.java:206)

This happens because aspectManager is set to null, before undeploying AspectManager.
While debugging I detected that BeanMetaDataDeployer undeployment process is causing this:

at org.jboss.aop.deployers.AspectDeployer.setAspectManager(AspectDeployer.java:94)
at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-1)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:56)
at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:110)
at org.jboss.beans.info.plugins.AbstractPropertyInfo.set(AbstractPropertyInfo.java:182)
at org.jboss.beans.info.plugins.BeanInfoUtil.set(BeanInfoUtil.java:177)
at org.jboss.beans.info.plugins.AbstractBeanInfo.setProperty(AbstractBeanInfo.java:242)
at org.jboss.kernel.plugins.dependency.PropertyDispatchWrapper.execute(PropertyDispatchWrapper.java:70)
at org.jboss.kernel.plugins.dependency.ExecutionWrapper.execute(ExecutionWrapper.java:45)
at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchExecutionWrapper(KernelControllerContextAction.java:108)
at org.jboss.kernel.plugins.dependency.ConfigureAction.dispatchSetProperty(ConfigureAction.java:108)
at org.jboss.kernel.plugins.dependency.ConfigureAction.setAttributes(ConfigureAction.java:88)
at org.jboss.kernel.plugins.dependency.ConfigureAction.uninstallActionInternal(ConfigureAction.java:59)
at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.uninstallAction(KernelControllerContextAction.java:167)
at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.uninstallAction(KernelControllerContextAction.java:46)
at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleUninstallAction(SimpleControllerContextAction.java:79)
at org.jboss.dependency.plugins.action.AccessControllerContextAction.uninstall(AccessControllerContextAction.java:131)
at org.jboss.dependency.plugins.AbstractControllerContextActions.uninstall(AbstractControllerContextActions.java:58)
at org.jboss.dependency.plugins.AbstractControllerContext.uninstall(AbstractControllerContext.java:333)
at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:1,323)
at org.jboss.dependency.plugins.AbstractController.uninstallContext(AbstractController.java:1,009)
at org.jboss.dependency.plugins.AbstractController.uninstallContext(AbstractController.java:936)
at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:463)
at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:426)
at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.undeploy(BeanMetaDataDeployer.java:80)
at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.undeploy(BeanMetaDataDeployer.java:42)
at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalUndeploy(AbstractSimpleRealDeployer.java:73)
at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.undeploy(AbstractRealDeployer.java:112)
at org.jboss.deployers.plugins.deployers.DeployerWrapper.undeploy(DeployerWrapper.java:187)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doUninstallParentLast(DeployersImpl.java:1,072)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doUninstallParentLast(DeployersImpl.java:1,065)
at org.jboss.deployers.plugins.deployers.DeployersImpl.uninstall(DeployersImpl.java:1,027)
at org.jboss.dependency.plugins.AbstractControllerContext.uninstall(AbstractControllerContext.java:333)
at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:1,323)
at org.jboss.dependency.plugins.AbstractController.uninstallContext(AbstractController.java:1,009)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:627)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:411)
at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:423)
at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:506)
at org.jboss.deployers.plugins.main.MainDeployerImpl.shutdown(MainDeployerImpl.java:543)
at org.jboss.embedded.Bootstrap.shutdown(Bootstrap.java:206)