Re: [xwiki-users] Wiki 4.5.2 broken

Hello, Just got a big issue on my wiki ... I successfully migrated from 3.5 to 4.5.2, and performed the distribution wizard upgrades. Everything was working fine for days. Now I just restarted my wiki (out of memory...), I get the following exceptions at startup, and no page can be accessed anymore: INFO: Deploying web application archive xwiki.war 2013-03-26 10:21:45,298 [main] ERROR ltInstalledExtensionRepository - Invalid extension [org.xwiki.platform:xwiki-platform-linkchecker-ui-3.5] on namespace [], it will not be loaded org.xwiki.extension.InvalidExtensionException: The dependency [org.xwiki.platform:xwiki-platform-linkchecker-refresher-3.5] of extension [org.xwiki.platform:xwiki-platform-linkchecker-ui-3.5] is invalid at org.xwiki.extension.repository.internal.installed.DefaultInstalledExtensionRepository.validateExtension(DefaultInstalledExtensionRepository.java:232) [xwiki-commons-extension-api-4.5.2.jar:na] at org.xwiki.extension.repository.internal.installed.DefaultInstalledExtensionRepository.validateExtension(DefaultInstalledExtensionRepository.java:156) [xwiki-commons-extension-api-4.5.2.jar:na] at org.xwiki.extension.repository.internal.installed.DefaultInstalledExtensionRepository.initialize(DefaultInstalledExtensionRepository.java:128) [xwiki-commons-extension-api-4.5.2.jar:na] at org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:323) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:378) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:346) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:161) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:312) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:378) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:346) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:161) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:312) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:378) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstanceMap(EmbeddableComponentManager.java:185) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstanceList(EmbeddableComponentManager.java:169) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.observation.internal.DefaultObservationManager.initialize(DefaultObservationManager.java:135) [xwiki-commons-observation-local-4.5.2.jar:na] at org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:323) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:378) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:346) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:155) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.container.servlet.XWikiServletContextListener.contextInitialized(XWikiServletContextListener.java:99) [xwiki-platform-container-servlet-4.5.2.jar:na] at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3934) [catalina.jar:na] at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) [catalina.jar:na] at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:850) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:724) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:493) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1206) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314) [catalina.jar:na] at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) [catalina.jar:na] at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) [catalina.jar:na] at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) [catalina.jar:na] at org.apache.catalina.core.StandardService.start(StandardService.java:516) [catalina.jar:na] at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) [catalina.jar:na] at org.apache.catalina.startup.Catalina.start(Catalina.java:583) [catalina.jar:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.6.0_30] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.6.0_30] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.6.0_30] at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_30] at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) [bootstrap.jar:na] at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) [bootstrap.jar:na] 2013-03-26 10:21:46,217 [main] ERROR .x.j.i.DefaultJobStatusStorage - Failed to load job status from file [/repository/external/.xwiki/data/jobs/status/extension/action/org.xwiki.enterprise%3Axwiki-enterprise-ui/wiki%3Axwiki/status.xml] com.thoughtworks.xstream.converters.ConversionException: Could not call org.xwiki.logging.LogQueue.readObject() : null ---- Debugging information ---- message : Could not call org.xwiki.logging.LogQueue.readObject() cause-exception : java.lang.ExceptionInInitializerError cause-message : null class : org.xwiki.logging.LogQueue required-type : com.xpn.xwiki.objects.BaseObjectReference converter-type : com.thoughtworks.xstream.converters.reflection.SerializableConverter path : /org.xwiki.job.internal.DefaultJobStatus/logs/java.util.concurrent.ConcurrentLinkedQueue/org.xwiki.logging.event.LogEvent[372]/throwable/exception/exception/cause/identifier/object/referenceCache line number : 5372 class[1] : org.xwiki.job.internal.DefaultJobStatus converter-type[1] : com.thoughtworks.xstream.converters.reflection.ReflectionConverter version : null ------------------------------- at com.thoughtworks.xstream.converters.reflection.SerializationMethodInvoker.callReadObject(SerializationMethodInvoker.java:119) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.SerializableConverter.doUnmarshal(SerializableConverter.java:425) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1058) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1042) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1006) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.XStream.fromXML(XStream.java:948) ~[xstream-1.4.3.jar:na] at org.xwiki.job.internal.DefaultJobStatusStorage.loadJobStatus(DefaultJobStatusStorage.java:195) [xwiki-commons-job-4.5.2.jar:na] at org.xwiki.job.internal.DefaultJobStatusStorage.loadStatus(DefaultJobStatusStorage.java:178) [xwiki-commons-job-4.5.2.jar:na] at org.xwiki.job.internal.DefaultJobStatusStorage.loadFolder(DefaultJobStatusStorage.java:165) [xwiki-commons-job-4.5.2.jar:na] at org.xwiki.job.internal.DefaultJobStatusStorage.loadFolder(DefaultJobStatusStorage.java:162) [xwiki-commons-job-4.5.2.jar:na] at org.xwiki.job.internal.DefaultJobStatusStorage.loadFolder(DefaultJobStatusStorage.java:162) [xwiki-commons-job-4.5.2.jar:na] at org.xwiki.job.internal.DefaultJobStatusStorage.loadFolder(DefaultJobStatusStorage.java:162) [xwiki-commons-job-4.5.2.jar:na] at org.xwiki.job.internal.DefaultJobStatusStorage.loadFolder(DefaultJobStatusStorage.java:162) [xwiki-commons-job-4.5.2.jar:na] at org.xwiki.job.internal.DefaultJobStatusStorage.load(DefaultJobStatusStorage.java:148) [xwiki-commons-job-4.5.2.jar:na] at org.xwiki.job.internal.DefaultJobStatusStorage.initialize(DefaultJobStatusStorage.java:111) [xwiki-commons-job-4.5.2.jar:na] at org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:323) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:378) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:346) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:161) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:312) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:378) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:346) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:161) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:312) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:378) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:346) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:161) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:312) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:378) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstanceMap(EmbeddableComponentManager.java:185) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstanceList(EmbeddableComponentManager.java:169) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.observation.internal.DefaultObservationManager.initialize(DefaultObservationManager.java:135) [xwiki-commons-observation-local-4.5.2.jar:na] at org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:323) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:378) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:346) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:155) [xwiki-commons-legacy-component-default-4.5.2.jar:na] at org.xwiki.container.servlet.XWikiServletContextListener.contextInitialized(XWikiServletContextListener.java:99) [xwiki-platform-container-servlet-4.5.2.jar:na] at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3934) [catalina.jar:na] at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) [catalina.jar:na] at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:850) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:724) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:493) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1206) [catalina.jar:na] at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314) [catalina.jar:na] at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) [catalina.jar:na] at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) [catalina.jar:na] at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) [catalina.jar:na] at org.apache.catalina.core.StandardService.start(StandardService.java:516) [catalina.jar:na] at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) [catalina.jar:na] at org.apache.catalina.startup.Catalina.start(Catalina.java:583) [catalina.jar:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.6.0_30] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.6.0_30] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.6.0_30] at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_30] at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) [bootstrap.jar:na] at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) [bootstrap.jar:na] Caused by: java.lang.ExceptionInInitializerError: null at sun.reflect.GeneratedSerializationConstructorAccessor25.newInstance(Unknown Source) ~[na:na] at java.lang.reflect.Constructor.newInstance(Constructor.java:513) ~[na:1.6.0_30] at com.thoughtworks.xstream.converters.reflection.Sun14ReflectionProvider.newInstance(Sun14ReflectionProvider.java:75) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.instantiateNewInstance(AbstractReflectionConverter.java:428) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:233) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.extended.ThrowableConverter.unmarshal(ThrowableConverter.java:52) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.extended.ThrowableConverter.unmarshal(ThrowableConverter.java:52) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.extended.ThrowableConverter.unmarshal(ThrowableConverter.java:52) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.extended.ThrowableConverter.unmarshal(ThrowableConverter.java:52) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.converters.reflection.SerializableConverter$2.readFromStream(SerializableConverter.java:311) ~[xstream-1.4.3.jar:na] at com.thoughtworks.xstream.core.util.CustomObjectInputStream.readObjectOverride(CustomObjectInputStream.java:104) ~[xstream-1.4.3.jar:na] at java.io.ObjectInputStream.readObject(ObjectInputStream.java:344) ~[na:1.6.0_30] at java.util.concurrent.ConcurrentLinkedQueue.readObject(ConcurrentLinkedQueue.java:665) ~[na:1.6.0_30] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.6.0_30] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.6.0_30] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.6.0_30] at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_30] at com.thoughtworks.xstream.converters.reflection.SerializationMethodInvoker.callReadObject(SerializationMethodInvoker.java:113) ~[xstream-1.4.3.jar:na] ... 75 common frames omitted Caused by: java.lang.RuntimeException: Component manager has not been initialized before lookup for [org.xwiki.model.reference.DocumentReferenceResolver< java.lang.String >] for hint [default] at com.xpn.xwiki.web.Utils.getComponent(Utils.java:686) ~[xwiki-platform-legacy-oldcore-4.5.2.jar:na] at com.xpn.xwiki.web.Utils.getComponent(Utils.java:705) ~[xwiki-platform-legacy-oldcore-4.5.2.jar:na] at com.xpn.xwiki.objects.BaseObjectReference.<clinit>(BaseObjectReference.java:61) ~[xwiki-platform-legacy-oldcore-4.5.2.jar:na] ... 139 common frames omitted About the linkchecker extension problem, I checked and I had 2 versions of it in my permanent directory (3.5 and 4.5.2), so I removed the 3.5 and restarted but it did not change the rest ... When I try to access some page of my wiki, a servlet exception is thrown with root cause: *root cause* java.lang.NoClassDefFoundError: Could not initialize class com.xpn.xwiki.objects.BaseObjectReference com.xpn.xwiki.objects.BaseObject.createReference(BaseObject.java:107) com.xpn.xwiki.objects.BaseObject.createReference(BaseObject.java:45) com.xpn.xwiki.objects.BaseElement.getReference(BaseElement.java:79) com.xpn.xwiki.objects.BaseElement.getLocalKey(BaseElement.java:178) com.xpn.xwiki.objects.BaseElement.getId(BaseElement.java:189) com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:828) com.xpn.xwiki.store.XWikiCacheStore.loadXWikiDoc(XWikiCacheStore.java:290) [...] Any help would be very welcome :-) BR, Jeremie _______________________________________________ users mailing list users(a)xwiki.org http://lists.xwiki.org/mailman/listinfo/users