problema struts me modifica los datos

[FashKoost]

Me he dado cuenta de que me sale esta excepcion en el tomcat, y no parece ser una clase mia
mar 09, 2015 10:27:25 AM org.apache.catalina.session.StandardSession writeObject
Advertencia: No puedo serializar atributo de sesión org.apache.struts2.util.InvocationSessionStore.inv ocationMap para sesión B867A53B90E1A22975849CCADE2B9F56
java.io.NotSerializableException: com.opensymphony.xwork2.inject.ContainerImpl$Const ructorInjector
at java.io.ObjectOutputStream.writeObject0(ObjectOutp utStream.java:1181)
at java.io.ObjectOutputStream.writeObject(ObjectOutpu tStream.java:347)
at com.opensymphony.xwork2.inject.util.ReferenceMap.w riteObject(ReferenceMap.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeWriteObject(Object StreamClass.java:988)
at java.io.ObjectOutputStream.writeSerialData(ObjectO utputStream.java:1493)
at java.io.ObjectOutputStream.writeOrdinaryObject(Obj ectOutputStream.java:1429)
at java.io.ObjectOutputStream.writeObject0(ObjectOutp utStream.java:1175)
at java.io.ObjectOutputStream.defaultWriteFields(Obje ctOutputStream.java:1541)
at java.io.ObjectOutputStream.writeSerialData(ObjectO utputStream.java:1506)
at java.io.ObjectOutputStream.writeOrdinaryObject(Obj ectOutputStream.java:1429)
at java.io.ObjectOutputStream.writeObject0(ObjectOutp utStream.java:1175)
at java.io.ObjectOutputStream.defaultWriteFields(Obje ctOutputStream.java:1541)
at java.io.ObjectOutputStream.writeSerialData(ObjectO utputStream.java:1506)
at java.io.ObjectOutputStream.writeOrdinaryObject(Obj ectOutputStream.java:1429)
at java.io.ObjectOutputStream.writeObject0(ObjectOutp utStream.java:1175)
at java.io.ObjectOutputStream.defaultWriteFields(Obje ctOutputStream.java:1541)
at java.io.ObjectOutputStream.writeSerialData(ObjectO utputStream.java:1506)
at java.io.ObjectOutputStream.writeOrdinaryObject(Obj ectOutputStream.java:1429)
at java.io.ObjectOutputStream.writeObject0(ObjectOutp utStream.java:1175)
at java.io.ObjectOutputStream.defaultWriteFields(Obje ctOutputStream.java:1541)
at java.io.ObjectOutputStream.writeSerialData(ObjectO utputStream.java:1506)
at java.io.ObjectOutputStream.writeOrdinaryObject(Obj ectOutputStream.java:1429)
at java.io.ObjectOutputStream.writeObject0(ObjectOutp utStream.java:1175)
at java.io.ObjectOutputStream.writeObject(ObjectOutpu tStream.java:347)
at java.util.HashMap.writeObject(HashMap.java:1133)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeWriteObject(Object StreamClass.java:988)
at java.io.ObjectOutputStream.writeSerialData(ObjectO utputStream.java:1493)
at java.io.ObjectOutputStream.writeOrdinaryObject(Obj ectOutputStream.java:1429)
at java.io.ObjectOutputStream.writeObject0(ObjectOutp utStream.java:1175)
at java.io.ObjectOutputStream.writeObject(ObjectOutpu tStream.java:347)
at org.apache.catalina.session.StandardSession.writeO bject(StandardSession.java:1671)
at org.apache.catalina.session.StandardSession.writeO bjectData(StandardSession.java:1077)
at org.apache.catalina.session.StandardManager.doUnlo ad(StandardManager.java:430)
at org.apache.catalina.session.StandardManager.unload (StandardManager.java:351)
at org.apache.catalina.session.StandardManager.stopIn ternal(StandardManager.java:516)
at org.apache.catalina.util.LifecycleBase.stop(Lifecy cleBase.java:232)
at org.apache.catalina.core.StandardContext.stopInter nal(StandardContext.java:5655)
at org.apache.catalina.util.LifecycleBase.stop(Lifecy cleBase.java:232)
at org.apache.catalina.manager.ManagerServlet.undeplo y(ManagerServlet.java:1359)
at org.apache.catalina.manager.ManagerServlet.doGet(M anagerServlet.java:379)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:620)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:727)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilt er(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:208)
at org.apache.catalina.filters.SetCharacterEncodingFi lter.doFilter(SetCharacterEncodingFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBas e.invoke(AuthenticatorBase.java:610)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(A ccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.p rocess(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnect ionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.AprEndpoint$SocketProce ssor.doRun(AprEndpoint.java:2441)
at org.apache.tomcat.util.net.AprEndpoint$SocketProce ssor.run(AprEndpoint.java:2430)
at java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)