[xwiki-users] Upgrade error from 6.4.2 to last version

Hello all, This afternoon I want to make an upgrage de my xwiki version, as I see some new versions on line. I have a debian server with Tomcat 7 and Postgresql. To get packages Debian claims for a "apt-get dist-upgrade" (otherwise nothing happens) Every download seems ok But after installation I got this message on home of the xwiki : java.lang.NullPointerException com.xpn.xwiki.web.Utils.getContextComponentManager(Utils.java:695) com.xpn.xwiki.web.Utils.getComponent(Utils.java:752) com.xpn.xwiki.web.Utils.getComponent(Utils.java:719) com.xpn.xwiki.web.XWikiRequestProcessor.processPath(XWikiRequestProcessor.java:47) org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:154) org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:115) org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:127) org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63) com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66) org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:137) I go to the /var/log/tomcat7/ catalina error file and find this additionnal message : root@CESAP-WIKI01:/var/log/tomcat7# cat catalina.out juin 18, 2015 5:25:01 PM org.apache.coyote.AbstractProtocol init INFOS: Initializing ProtocolHandler ["http-bio-8080"] juin 18, 2015 5:25:01 PM org.apache.catalina.startup.Catalina load INFOS: Initialization processed in 737 ms juin 18, 2015 5:25:01 PM org.apache.catalina.core.StandardService startInternal INFOS: Démarrage du service Catalina juin 18, 2015 5:25:01 PM org.apache.catalina.core.StandardEngine startInternal INFOS: Starting Servlet Engine: Apache Tomcat/7.0.28 juin 18, 2015 5:25:01 PM org.apache.catalina.startup.HostConfig deployDescriptor INFOS: Déploiement du descripteur de configuration /etc/tomcat7/Catalina/localhost/xwiki.xml 2015-06-18 17:25:18,516 [localhost-startStop-1] ERROR .o.i.DefaultObservationManager - Failed to lookup listeners org.xwiki.component.manager.ComponentLookupException: Failed to lookup component [role = [interface org.xwiki.observation.EventListener] hint = [OfficeServerLifecycleListener]] at org.xwiki.component.embed.EmbeddableComponentManager.getInstanceMap(EmbeddableComponentManager.java:216) ~[xwiki-commons-legacy-component-default-7.1.1.jar:na] at org.xwiki.component.embed.Embed ... I control that the xwiki.xml file is ok : slassire@CESAP-WIKI01:/etc/tomcat7/Catalina/localhost$ ll total 8 drwxrwxr-x 2 root tomcat7 4096 juin 18 16:58 ./ drwxrwxr-x 3 root tomcat7 4096 juil. 26 2013 ../ lrwxrwxrwx 1 root tomcat7 28 juin 17 16:09 xwiki.xml -> /etc/xwiki/xwiki-tomcat7.xml Tomcat is running fine on the basic url : It works ! If you're seeing this page via a web browser, it means you've setup Tomcat successfully. Congratulations! so after1 hour, no more idea for me, do you see what's wrong ? Cordialement Stéphane Lassire Courriel : slassire(a)cesap.asso.fr Ce courrier est adressé uniquement à son destinataire et contient des informations couvertes par le secret professionnel. Si ce message vous a été adressé par erreur, merci d'en informer son auteur et de le détruire immédiatement.