Hi I just checked out platform (core SVN revision: 22631) and enterprise, built it and installed the Generic installer XWiki. While starting it up I saw this exception: 2009-08-12 12:37:34.565::WARN:  Failed startup of context org.mortbay.jetty.webapp.WebAppContext@4d88a387{/xwiki,/Users/ schaefa/Development/xwiki/installations/xwiki.20090812/jetty/../ webapps/xwiki} java.lang.NullPointerException       at org .xwiki .observation .remote .internal .DefaultRemoteObservationManagerContext .isRemoteState(DefaultRemoteObservationManagerContext.java:36)       at org .xwiki .observation .remote .internal .jgroups .JGroupsRemoteObservationManager .notify(JGroupsRemoteObservationManager.java:150)       at org .xwiki .observation .remote.internal.LocalEventListener.onEvent(LocalEventListener.java: 115)       at org .xwiki .observation .internal .DefaultObservationManager.notify(DefaultObservationManager.java:248)       at org .xwiki .observation .internal .DefaultObservationManager.notify(DefaultObservationManager.java:229)       at org .xwiki .observation .internal .DefaultObservationManager.notify(DefaultObservationManager.java:264)       at org .xwiki .container .servlet .XWikiServletContextListener .contextInitialized(XWikiServletContextListener.java:77)       at org .mortbay .jetty.handler.ContextHandler.startContext(ContextHandler.java:548)       at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)       at org .mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java: 1239)       at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java: 517)       at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:466)       at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 50)       at org .mortbay .jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)       at org .mortbay .jetty .handler .ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)       at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 50)       at org .mortbay .jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)       at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 50)       at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 130)       at org.mortbay.jetty.Server.doStart(Server.java:224)       at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 50)       at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)       at sun .reflect .NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)       at sun .reflect .DelegatingMethodAccessorImpl .invoke(DelegatingMethodAccessorImpl.java:25)       at java.lang.reflect.Method.invoke(Method.java:597)       at org.mortbay.start.Main.invokeMain(Main.java:194)       at org.mortbay.start.Main.start(Main.java:523)       at org.mortbay.start.Main.main(Main.java:119) Can't figure out what is wrong but it seems to be an issue with the Execution not be set on the DefaultRemoteObservationManagerContext or the Execution.getContext() returns null. Cheers Andreas Schaefer

On Wed, Aug 12, 2009 at 21:52, Vincent Massol<vincent(a)massol.net> wrote: I fixed the fact that Remote Observation Manager was enabled by default where it should not but for the NullPointer itself can only append if the Execution context is not properly initialized when contextInitialized() event notification is executed which does not make sense...

-- Thomas Mortagne