Hello, We are facing several ERRORs like this at first init when database is empty: 14:32:20,532 ERROR [org.exoplatform.portal.pom.config.POMSessionManager] (MSC service thread 1-1) Unexpected error when clearing pom cache: java.lang.NullPointerException at org.exoplatform.services.cache.impl.jboss.AbstractExoCache.select(AbstractExoCache.java:343) [exo.kernel.component.ext.cache.impl.jboss.v3-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.portal.pom.config.POMSessionManager.cacheRemove(POMSessionManager.java:125) [exo.portal.component.portal-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at org.exoplatform.portal.pom.config.POMSession.reset(POMSession.java:280) [exo.portal.component.portal-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at org.exoplatform.portal.pom.config.POMSession.access$000(POMSession.java:56) [exo.portal.component.portal-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at org.exoplatform.portal.pom.config.POMSession$1.afterSynchronization(POMSession.java:265) [exo.portal.component.portal-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at org.exoplatform.commons.chromattic.AbstractContext.close(AbstractContext.java:123) [exo.portal.component.common-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at org.exoplatform.commons.chromattic.Synchronization.close(Synchronization.java:99) [exo.portal.component.common-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at org.exoplatform.commons.chromattic.ChromatticManager.endRequest(ChromatticManager.java:113) [exo.portal.component.common-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at org.exoplatform.commons.chromattic.ChromatticManager.endRequest(ChromatticManager.java:126) [exo.portal.component.common-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at org.exoplatform.container.component.RequestLifeCycle.doEnd(RequestLifeCycle.java:71) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.container.component.RequestLifeCycleStack.end(RequestLifeCycleStack.java:102) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.container.component.RequestLifeCycle.end(RequestLifeCycle.java:163) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.portal.config.NewPortalConfigListener.run(NewPortalConfigListener.java:249) [exo.portal.component.portal-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at org.exoplatform.portal.config.UserPortalConfigService.start(UserPortalConfigService.java:507) [exo.portal.component.portal-3.6.4.Final-redhat-1.jar:3.6.4.Final-redhat-1] at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source) [:1.7.0_25] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_25] at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_25] at org.exoplatform.container.LifecycleVisitor.traverse(LifecycleVisitor.java:100) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.container.LifecycleVisitor.start(LifecycleVisitor.java:170) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.container.ConcurrentPicoContainer.start(ConcurrentPicoContainer.java:554) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.container.ExoContainer.start(ExoContainer.java:275) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.container.PortalContainer.start(PortalContainer.java:683) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.container.ExoContainer.start(ExoContainer.java:263) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.container.RootContainer.createPortalContainer(RootContainer.java:681) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.exoplatform.container.RootContainer.createPortalContainers(RootContainer.java:346) [exo.kernel.container-2.4.6-GA-redhat-1.jar:2.4.6-GA-redhat-1] at org.gatein.integration.jboss.as7.web.StartupService.start(StartupService.java:45) at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_25] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_25] at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25] Configuration is based on clustering. Any idea ? Thanks, Lucas