Stacktrace:

javax.servlet.ServletException: org.jboss.resteasy.spi.UnhandledException: javax.ejb.NoSuchEJBException: Could not find stateful bean: ag2m3u-2n93vg-g778222l-1-g7782ayx-4a
at org.jboss.seam.servlet.ContextualHttpServletRequest.run(ContextualHttpServletRequest.java:74)
at org.jboss.seam.resteasy.ResteasyResourceAdapter.getResource(ResteasyResourceAdapter.java:122)
at org.jboss.seam.servlet.SeamResourceServlet.service(SeamResourceServlet.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.jboss.seam.mock.ResourceRequestEnvironment$ResourceRequest$1.doFilter(ResourceRequestEnvironment.java:164)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.AuthenticationFilter.processBasicAuth(AuthenticationFilter.java:185)
at org.jboss.seam.web.AuthenticationFilter.doFilter(AuthenticationFilter.java:121)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
at org.jboss.seam.mock.ResourceRequestEnvironment$ResourceRequest.run(ResourceRequestEnvironment.java:160)
at org.jboss.seam.example.restbay.test.SecurityTest.synchronizationsLookup(SecurityTest.java:191)
Caused by: org.jboss.resteasy.spi.UnhandledException: javax.ejb.NoSuchEJBException: Could not find stateful bean: ag2m3u-2n93vg-g778222l-1-g7782ayx-4a
at org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:247)
at org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:159)
at org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:138)
at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:374)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:336)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:103)
at org.jboss.seam.resteasy.ResteasyResourceAdapter$1.process(ResteasyResourceAdapter.java:146)
at org.jboss.seam.servlet.ContextualHttpServletRequest.run(ContextualHttpServletRequest.java:53)
... 45 more
Caused by: javax.ejb.NoSuchEJBException: Could not find stateful bean: ag2m3u-2n93vg-g778222l-1-g7782ayx-4a
at org.jboss.ejb3.cache.simple.SimpleStatefulCache.get(SimpleStatefulCache.java:394)
at org.jboss.ejb3.cache.simple.SimpleStatefulCache.get(SimpleStatefulCache.java:379)
at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:63)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:166)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateful.StatefulContainer.localInvoke(StatefulContainer.java:261)
at org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:119)
at $Proxy96.isAwareOfContainerTransactions(Unknown Source)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)
at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:76)
at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
at org.jboss.seam.intercept.ClientSideInterceptor.invoke(ClientSideInterceptor.java:54)
at org.javassist.tmp.java.lang.Object_$$javassist_seam_1.isAwareOfContainerTransactions(Object$$_javassist_seam_1.java)
at org.jboss.seam.example.restbay.resteasy.SecuredResource.synchronizationsLookup(SecuredResource.java:54)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
at org.jboss.seam.resteasy.ResteasyContextInjectionInterceptor.aroundInvoke(ResteasyContextInjectionInterceptor.java:59)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:77)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.security.SecurityInterceptor.aroundInvoke(SecurityInterceptor.java:163)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:185)
at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:103)
at org.jboss.seam.example.restbay.resteasy.SecuredResource_$$javassist_seam_23.synchronizationsLookup(SecuredResource$$_javassist_seam_23.java)
at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:119)
at org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:211)
at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:176)
at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:166)
at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:359)
... 49 more
... Removed 34 stack frames

Relevant hudson job can be seen here: http://hudson.qa.jboss.com/hudson/view/Seam%20Release/job/seam-eap5-unit-integration-testsuite/