Additionally I have found XStream-related problem when AHTTPServlet.init() method is called:

...
Caused by: java.lang.RuntimeException: Could not access java.util.EnumSet.elementType field
...


I have tried to search this error and it seems that this is a known issue with XStream running on non-SUN JVMs as the elementType field is package private in IBM JVM that is used in Websphere AS.

Full log:
[3/17/11 11:55:03:615 CET]     FFDC Exception:javax.servlet.ServletException SourceId:com.ibm.ws.webcontainer.servlet.ServletInstance.init ProbeId:172 Reporter:com.ibm.ws.webcontainer.servlet.ServletWrapperImpl@6ad86ad8
javax.servlet.ServletException: java.lang.RuntimeException: java.lang.RuntimeException: Application startup failed.
at scrum.server.common.AHttpServlet.init(AHttpServlet.java:56)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapper.java:358)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.init(ServletWrapperImpl.java:169)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:1809)
at com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor.createServletWrapper(WebExtensionProcessor.java:98)
at com.ibm.ws.webcontainer.webapp.WebApp.getServletWrapper(WebApp.java:1037)
at com.ibm.ws.webcontainer.webapp.WebApp.getServletWrapper(WebApp.java:958)
at com.ibm.ws.webcontainer.webapp.WebApp.initializeTargetMappings(WebApp.java:637)
at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinally(WebApp.java:435)
at com.ibm.ws.webcontainer.webapp.WebAppImpl.initialize(WebAppImpl.java:304)
at com.ibm.ws.webcontainer.webapp.WebGroupImpl.addWebApplication(WebGroupImpl.java:100)
at com.ibm.ws.webcontainer.VirtualHostImpl.addWebApplication(VirtualHostImpl.java:166)
at com.ibm.ws.webcontainer.WSWebContainer.addWebApp(WSWebContainer.java:731)
at com.ibm.ws.webcontainer.WSWebContainer.addWebApplication(WSWebContainer.java:616)
at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:376)
at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:668)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1122)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1319)
at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:610)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:944)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:725)
at com.ibm.ws.runtime.component.ApplicationMgrImpl$1.run(ApplicationMgrImpl.java:1266)
at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:4672)
at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:4760)
at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:255)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplicationDynamically(ApplicationMgrImpl.java:1271)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:2043)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:439)
at com.ibm.ws.runtime.component.CompositionUnitImpl.start(CompositionUnitImpl.java:123)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:382)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.startCompositionUnit(CompositionUnitMgrImpl.java:653)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.startCompositionUnit(CompositionUnitMgrImpl.java:615)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:1177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:599)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:599)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:243)
at javax.management.modelmbean.RequiredModelMBean.invokeMethod(RequiredModelMBean.java:1085)
at javax.management.modelmbean.RequiredModelMBean.invoke(RequiredModelMBean.java:966)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:848)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:773)
at com.ibm.ws.management.AdminServiceImpl$1.run(AdminServiceImpl.java:1332)
at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
at com.ibm.ws.management.AdminServiceImpl.invoke(AdminServiceImpl.java:1225)
at com.ibm.ws.management.commands.AdminServiceCommands$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:564)
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:738)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1657)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1597)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:104)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:934)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:502)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:179)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:353)
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:217)
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:738)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1657)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1597)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
at com.ibm.ws.console.core.servlet.WSCUrlFilter.setUpCommandAssistence(WSCUrlFilter.java:933)
at com.ibm.ws.console.core.servlet.WSCUrlFilter.continueStoringTaskState(WSCUrlFilter.java:500)
at com.ibm.ws.console.core.servlet.WSCUrlFilter.doFilter(WSCUrlFilter.java:321)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:934)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:502)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:179)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3933)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:276)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:931)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:445)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:504)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:301)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1784)
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:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1604)
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: Application startup failed.
at ilarkesto.di.app.ApplicationStarter.startApplication(ApplicationStarter.java:48)
at ilarkesto.di.app.WebApplicationStarter.startWebApplication(WebApplicationStarter.java:18)
at scrum.server.ScrumWebApplication.get(ScrumWebApplication.java:326)
at scrum.server.common.StartServlet.onInit(StartServlet.java:78)
at scrum.server.common.AHttpServlet.init(AHttpServlet.java:53)
... 108 more
Caused by: java.lang.RuntimeException: Application startup failed.
at ilarkesto.di.app.AApplication.start(AApplication.java:92)
at ilarkesto.di.app.ApplicationStarter.startApplication(ApplicationStarter.java:42)
... 112 more
Caused by: java.lang.RuntimeException: Invoking ScrumWebApplication.getEntityStore() failed
at ilarkesto.base.BeanMap.get(BeanMap.java:249)
at ilarkesto.di.ReflectionBeanProvider.getBean(ReflectionBeanProvider.java:37)
at ilarkesto.di.MultiBeanProvider.getBean(MultiBeanProvider.java:59)
at ilarkesto.di.Autowire.autowire(Autowire.java:87)
at ilarkesto.di.ABeanProvider.autowire(ABeanProvider.java:35)
at ilarkesto.di.Context.autowire(Context.java:96)
at ilarkesto.di.app.AApplication.getDaoService(AApplication.java:327)
at ilarkesto.di.app.AApplication.ensureIntegrity(AApplication.java:51)
at scrum.server.ScrumWebApplication.ensureIntegrity(ScrumWebApplication.java:149)
at ilarkesto.di.app.AApplication.start(AApplication.java:88)
... 113 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:599)
at ilarkesto.base.BeanMap.get(BeanMap.java:247)
... 122 more
Caused by: java.lang.RuntimeException: Invoking ScrumWebApplication.getBeanSerializer() failed
at ilarkesto.base.BeanMap.get(BeanMap.java:249)
at ilarkesto.di.ReflectionBeanProvider.getBean(ReflectionBeanProvider.java:37)
at ilarkesto.di.MultiBeanProvider.getBean(MultiBeanProvider.java:59)
at ilarkesto.di.Autowire.autowire(Autowire.java:87)
at ilarkesto.di.ABeanProvider.autowire(ABeanProvider.java:35)
at ilarkesto.di.Context.autowire(Context.java:96)
at ilarkesto.di.app.AApplication.getEntityStore(AApplication.java:303)
... 127 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:599)
at ilarkesto.base.BeanMap.get(BeanMap.java:247)
... 133 more
Caused by: com.thoughtworks.xstream.XStream$InitializationException: Could not instatiate converter : com.thoughtworks.xstream.converters.enums.EnumSetConverter : null
at com.thoughtworks.xstream.XStream.dynamicallyRegisterConverter(XStream.java:389)
at com.thoughtworks.xstream.XStream.setupConverters(XStream.java:372)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:196)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:181)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:169)
at ilarkesto.integration.xstream.XStreamSerializer.<init>(XStreamSerializer.java:29)
at ilarkesto.integration.xstream.XStreamSerializer.<init>(XStreamSerializer.java:24)
at ilarkesto.di.app.AApplication.getBeanSerializer(AApplication.java:316)
... 138 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:45)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:39)
at java.lang.reflect.Constructor.newInstance(Constructor.java:515)
at com.thoughtworks.xstream.XStream.dynamicallyRegisterConverter(XStream.java:386)
... 145 more
Caused by: java.lang.RuntimeException: Could not access java.util.EnumSet.elementType field
at com.thoughtworks.xstream.core.util.Fields.find(Fields.java:18)
at com.thoughtworks.xstream.converters.enums.EnumSetConverter.<init>(EnumSetConverter.java:31)
... 150 more


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