Error Install XE 2.5+ in WAS 6.1

I have update XE from 2.0.3 to 2.4.4 successful in WAS 6.1 but after installing XE 2.5.1 or XE 3.0.1, i get the follow error:

[9/5/11 14:17:22:328 GMT-03:00] 0000001f jsp W com.ibm.ws.jsp.taglib.TldParser endElement JSPG0235E: The JSP container failed to load the TagExtraInfo class [org.apache.struts.taglib.EnumerateTei]
[9/5/11 14:17:22:359 GMT-03:00] 0000001f jsp W com.ibm.ws.jsp.taglib.TldParser endElement JSPG0235E: The JSP container failed to load the TagExtraInfo class [org.apache.struts.taglib.IterateTei]
[9/5/11 14:17:24:046 GMT-03:00] 0000001f WebApp E Exception caught while initializing context
java.lang.RuntimeException: Failed to find the Observation Manager component
at org.xwiki.container.servlet.XWikiServletContextListener.contextInitialized(XWikiServletContextListener.java:81)
at com.ibm.ws.wswebcontainer.webapp.WebApp.notifyServletContextCreated(WebApp.java:653)
at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:378)
at com.ibm.ws.wswebcontainer.webapp.WebApp.initialize(WebApp.java:293)
at com.ibm.ws.wswebcontainer.webapp.WebGroup.addWebApplication(WebGroup.java:93)
at com.ibm.ws.wswebcontainer.VirtualHost.addWebApplication(VirtualHost.java:162)
at com.ibm.ws.wswebcontainer.WebContainer.addWebApp(WebContainer.java:673)
at com.ibm.ws.wswebcontainer.WebContainer.addWebApplication(WebContainer.java:626)
at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:335)
at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:551)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1274)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1137)
at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:573)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:816)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:945)
at com.ibm.ws.runtime.component.ApplicationMgrImpl$1.run(ApplicationMgrImpl.java:1461)
at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:4241)
at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:4338)
at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:245)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:1466)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:68)
at sun.reflect.GeneratedMethodAccessor51.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:271)
at javax.management.modelmbean.RequiredModelMBean.invokeMethod(RequiredModelMBean.java:1092)
at javax.management.modelmbean.RequiredModelMBean.invoke(RequiredModelMBean.java:973)
at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(DynamicMetaDataImpl.java:231)
at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(MetaDataImpl.java:238)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:833)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:802)
at com.ibm.ws.management.AdminServiceImpl$1.run(AdminServiceImpl.java:1139)
at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
at com.ibm.ws.management.AdminServiceImpl.invoke(AdminServiceImpl.java:1032)
at com.ibm.ws.management.commands.AdminServiceCommands$InvokeCmd.execute(AdminServiceCommands.java:251)
at com.ibm.ws.console.core.mbean.MBeanHelper.invoke(MBeanHelper.java:239)
at com.ibm.ws.console.appdeployment.ApplicationDeploymentCollectionAction.execute(ApplicationDeploymentCollectionAction.java:544)
at org.apache.struts.action.RequestProcessor.processActionPerform(Unknown Source)
at org.apache.struts.action.RequestProcessor.process(Unknown Source)
at org.apache.struts.action.ActionServlet.process(Unknown Source)
at org.apache.struts.action.ActionServlet.doPost(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java:282)
at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java:455)
at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java:265)
at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java:262)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1213)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1154)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:118)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:848)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:691)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:654)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:526)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:325)
at org.apache.struts.action.RequestProcessor.doForward(Unknown Source)
at org.apache.struts.tiles.TilesRequestProcessor.doForward(Unknown Source)
at org.apache.struts.action.RequestProcessor.processForwardConfig(Unknown Source)
at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(Unknown Source)
at com.ibm.isclite.container.controller.InformationController.processForwardConfig(InformationController.java:214)
at org.apache.struts.action.RequestProcessor.process(Unknown Source)
at org.apache.struts.action.ActionServlet.process(Unknown Source)
at org.apache.struts.action.ActionServlet.doPost(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java:282)
at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java:455)
at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java:265)
at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java:262)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1213)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1154)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
at com.ibm.ws.console.core.servlet.WSCUrlFilter.setUpCommandAssistence(WSCUrlFilter.java:792)
at com.ibm.ws.console.core.servlet.WSCUrlFilter.continueStoringTaskState(WSCUrlFilter.java:363)
at com.ibm.ws.console.core.servlet.WSCUrlFilter.doFilter(WSCUrlFilter.java:229)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:848)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:691)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:654)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:526)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:764)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1478)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:133)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:450)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:508)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:296)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1818)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:196)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:751)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:881)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1551)
Caused by: org.xwiki.component.manager.ComponentLookupException: Failed to lookup component [role = [org.xwiki.observation.ObservationManager] hint = [default]]
at org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:368)
at org.xwiki.component.embed.EmbeddableComponentManager.lookup(EmbeddableComponentManager.java:116)
at org.xwiki.container.servlet.XWikiServletContextListener.contextInitialized(XWikiServletContextListener.java:78)
... 103 more
Caused by: org.xwiki.component.phase.InitializationException: Failed to lookup Event Listeners
at org.xwiki.observation.internal.DefaultObservationManager.initialize(DefaultObservationManager.java:137)
at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:429)
at org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:361)
... 105 more
Caused by: org.xwiki.component.manager.ComponentLookupException: Failed to lookup component [role = [org.xwiki.observation.EventListener] hint = [JarHandlerApplicationStartedListener]]
at org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:368)
at org.xwiki.component.embed.EmbeddableComponentManager.lookupList(EmbeddableComponentManager.java:143)
at org.xwiki.component.internal.DefaultComponentManager.lookupList(DefaultComponentManager.java:105)
at org.xwiki.observation.internal.DefaultObservationManager.initialize(DefaultObservationManager.java:133)
... 107 more
Caused by: org.xwiki.component.manager.ComponentLookupException: Failed to lookup component [role = [org.xwiki.extension.repository.LocalExtensionRepository] hint = [default]]
at org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:368)
at org.xwiki.component.embed.EmbeddableComponentManager.lookup(EmbeddableComponentManager.java:126)
at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:403)
at org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:361)
... 110 more
Caused by: org.xwiki.component.manager.ComponentLookupException: Failed to lookup component [role = [org.xwiki.extension.repository.CoreExtensionRepository] hint = [default]]
at org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:368)
at org.xwiki.component.embed.EmbeddableComponentManager.lookup(EmbeddableComponentManager.java:126)
at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:403)
at org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:361)
... 113 more
Caused by: java.lang.NullPointerException
at java.util.Collections.addAll(Collections.java:3522)
at org.reflections.util.ClasspathHelper.getUrlsForCurrentClasspath(ClasspathHelper.java:49)
at org.reflections.util.ClasspathHelper.getUrlsForPackagePrefix(ClasspathHelper.java:35)
at org.xwiki.extension.repository.internal.DefaultCoreExtensionRepository.loadExtensions(DefaultCoreExtensionRepository.java:81)
at org.xwiki.extension.repository.internal.DefaultCoreExtensionRepository.initialize(DefaultCoreExtensionRepository.java:76)
at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:429)
at org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:361)
... 116 more