The exception is thrown if the bean is packaged in a WAR inside an EAR archive.

The FieldInjectionPoint.SerializationProxy.readResolve() is called, which in turn attempts to load the bean class using the ResourceLoader service. However, the ResourceLoader is based on the EAR module and cannot load a bean from the WAR.

The stack trace:
16:51:46,808 WARN [org.jboss.as.clustering.web.infinispan] (http-/127.0.0.1:8180-1) JBAS010322: Failed to load session DR8BkKvLhPfb8XVKkb16Nbe3: java.lang.RuntimeException: JBAS010333: Failed to load session attributes for session: DR8BkKvLhPfb8XVKkb16Nbe3
at org.jboss.as.clustering.web.infinispan.DistributedCacheManager$2.invoke(DistributedCacheManager.java:229)
at org.jboss.as.clustering.web.infinispan.DistributedCacheManager$2.invoke(DistributedCacheManager.java:212)
at org.jboss.as.clustering.infinispan.invoker.SimpleCacheInvoker.invoke(SimpleCacheInvoker.java:34)
at org.jboss.as.clustering.infinispan.invoker.BatchCacheInvoker.invoke(BatchCacheInvoker.java:48)
at org.jboss.as.clustering.infinispan.invoker.RetryingCacheInvoker.invoke(RetryingCacheInvoker.java:85)
at org.jboss.as.clustering.web.infinispan.DistributedCacheManager$ForceSynchronousCacheInvoker.invoke(DistributedCacheManager.java:550)
at org.jboss.as.clustering.web.infinispan.DistributedCacheManager.getData(DistributedCacheManager.java:238)
at org.jboss.as.clustering.web.infinispan.DistributedCacheManager.getSessionData(DistributedCacheManager.java:196)
at org.jboss.as.web.session.DistributableSessionManager.loadSession(DistributableSessionManager.java:1429) [jboss-as-web-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
at org.jboss.as.web.session.DistributableSessionManager.findSession(DistributableSessionManager.java:688) [jboss-as-web-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
at org.jboss.as.web.session.DistributableSessionManager.findSession(DistributableSessionManager.java:84) [jboss-as-web-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
at org.apache.catalina.connector.Request.doGetSession(Request.java:2629) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at org.apache.catalina.connector.Request.getSession(Request.java:2381) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:791) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at org.jboss.weld.context.beanstore.http.LazySessionBeanStore.getSession(LazySessionBeanStore.java:73) [weld-core-1.1.23.Final-redhat-1.jar:1.1.23.Final-redhat-1]
at org.jboss.weld.context.beanstore.http.LazySessionBeanStore.<init>(LazySessionBeanStore.java:59) [weld-core-1.1.23.Final-redhat-1.jar:1.1.23.Final-redhat-1]
at org.jboss.weld.context.http.HttpSessionContextImpl.associate(HttpSessionContextImpl.java:28) [weld-core-1.1.23.Final-redhat-1.jar:1.1.23.Final-redhat-1]
at org.jboss.weld.context.http.HttpSessionContextImpl.associate(HttpSessionContextImpl.java:16) [weld-core-1.1.23.Final-redhat-1.jar:1.1.23.Final-redhat-1]
at org.jboss.weld.servlet.WeldListener.requestInitialized(WeldListener.java:205) [weld-core-1.1.23.Final-redhat-1.jar:1.1.23.Final-redhat-1]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:134) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:926) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_80]
Caused by: org.jboss.weld.resources.spi.ResourceLoadingException: java.lang.ClassNotFoundException: org.jboss.tools.example.controller.MemberController from [Module "deployment.javaee6earPOC-ear.ear:main" from Service Module Loader]
at org.jboss.as.weld.WeldModuleResourceLoader.classForName(WeldModuleResourceLoader.java:74) [jboss-as-weld-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
at org.jboss.weld.injection.FieldInjectionPoint$SerializationProxy.getInjectionTargetClass(FieldInjectionPoint.java:214) [weld-core-1.1.23.Final-redhat-1.jar:1.1.23.Final-redhat-1]
at org.jboss.weld.injection.FieldInjectionPoint$SerializationProxy.readResolve(FieldInjectionPoint.java:210) [weld-core-1.1.23.Final-redhat-1.jar:1.1.23.Final-redhat-1]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_80]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_80]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_80]
at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_80]
at org.jboss.marshalling.reflect.SerializableClass.callReadResolve(SerializableClass.java:413)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1270)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:272)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1712)
at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1628)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1269)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:272)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadCollectionObject(RiverUnmarshaller.java:180)
at org.jboss.marshalling.river.RiverUnmarshaller.readCollectionData(RiverUnmarshaller.java:773)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:649)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1712)
at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1628)
at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1591)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1269)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:272)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1712)
at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1628)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1269)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:272)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1712)
at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1628)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1269)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:272)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadCollectionObject(RiverUnmarshaller.java:180)
at org.jboss.marshalling.river.RiverUnmarshaller.readCollectionData(RiverUnmarshaller.java:773)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:649)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1712)
at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1628)
at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1591)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1269)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:272)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1712)
at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1628)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1269)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:272)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1712)
at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1628)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1269)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:272)
at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
at org.jboss.marshalling.AbstractObjectInput.readObject(AbstractObjectInput.java:41)
at org.jboss.as.clustering.SimpleMarshalledValue.get(SimpleMarshalledValue.java:122)
at org.jboss.as.clustering.web.impl.SessionAttributeMarshallerImpl.unmarshal(SessionAttributeMarshallerImpl.java:72)
at org.jboss.as.clustering.web.infinispan.FineSessionAttributeStorage.load(FineSessionAttributeStorage.java:82)
at org.jboss.as.clustering.web.infinispan.DistributedCacheManager$2.invoke(DistributedCacheManager.java:227)
... 26 more
Caused by: java.lang.ClassNotFoundException: org.jboss.tools.example.controller.MemberController from [Module "deployment.javaee6earPOC-ear.ear:main" from Service Module Loader]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:213) [jboss-modules.jar:1.3.3.Final-redhat-1]
at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459) [jboss-modules.jar:1.3.3.Final-redhat-1]
at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408) [jboss-modules.jar:1.3.3.Final-redhat-1]
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389) [jboss-modules.jar:1.3.3.Final-redhat-1]
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134) [jboss-modules.jar:1.3.3.Final-redhat-1]
at org.jboss.as.weld.WeldModuleResourceLoader.classForName(WeldModuleResourceLoader.java:68) [jboss-as-weld-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
... 86 more