I'm trying to setup basic http authentication on a webservice which resides in a seam application, but during the deployment of my ear file, I'm getting the following exception:

java.lang.NullPointerException
at org.jboss.ejb3.security.RoleBasedAuthorizationInterceptorFactory.createPerClass(RoleBasedAuthorizationInterceptorFactory.java:49)
at org.jboss.aop.advice.AspectFactoryDelegator.createPerClass(AspectFactoryDelegator.java:107)
at org.jboss.aop.Advisor.addPerClassAspect(Advisor.java:569)
at org.jboss.aop.advice.ScopedInterceptorFactory.create(ScopedInterceptorFactory.java:72)
at org.jboss.aop.Advisor.createInterceptorChain(Advisor.java:618)
at org.jboss.aop.Advisor.pointcutResolved(Advisor.java:888)
at org.jboss.aop.Advisor.resolveMethodPointcut(Advisor.java:650)
at org.jboss.aop.ClassContainer.createInterceptorChains(ClassContainer.java:248)
at org.jboss.aop.ClassContainer.rebuildInterceptors(ClassContainer.java:115)
at org.jboss.aop.ClassContainer.initializeClassContainer(ClassContainer.java:58)
at org.jboss.ejb3.EJBContainer.processMetadata(EJBContainer.java:342)
at org.jboss.ejb3.SessionContainer.processMetadata(SessionContainer.java:140)
at org.jboss.ejb3.Ejb3Deployment.processEJBContainerMetadata(Ejb3Deployment.java:292)
at org.jboss.ejb3.Ejb3Deployment.start(Ejb3Deployment.java:356)
at org.jboss.ejb3.Ejb3Module.startService(Ejb3Module.java:91)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
at sun.reflect.GeneratedMethodAccessor3.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.start(Unknown Source)

This seams to mean that my SecurityDomain annotation (which is on my web service class) could not be found. The following annotations are on my web service class:

@Stateless
@SOAPBinding(style = SOAPBinding.Style.RPC, use = SOAPBinding.Use.LITERAL)
@SecurityDomain(value=mydomain", unauthenticatedPrincipal="anonymous")
@WebService(endpointInterface="ProjectServiceRemote", name =.WEB_SERVICE_NAME, targetNamespace = TAGET_NAMESPACE, serviceName = "servicename")
@WebContext(urlPattern = "/ps", authMethod = "BASIC", transportGuarantee = "NONE", secureWSDLAccess = false)

The authentication should be done via Atlassian Crowd. I'm using an open source JAAS LoginModule to accomplish this. The following snippet is taken from login-config.xml:

<application-policy name="mydomain">
<authentication>
<login-module code="com.atlassian.crowd.application.jaas.CrowdLoginModule"
flag="required">
<module-option name="application.name">n</module-option>
<module-option name="application.password">n</module-option>
<module-option name="storePass">true</module-option>
<module-option name="crowd.server.url">http://urlcrowd/services</module-option>
</login-module>
</authentication>
</application-policy>

Do you guys have any idea what is causing this nullpointer? I've tested this scenario in a small JEE app and there it works perfectly... Do I need to do some Seam specific things for this?

Important note: I'm using JBoss 4.2.3 and Seam 2.1.2.