Problem with WebDAV migration during upgrade from v3 to v4

[Miles Tillinger]

I have followed all steps correctly to update from v3.14 to v4.0.  I can start the site up and view all pages and I’m now ready to run the WebDAV migration via:   engineName/filemanager/op/edit/pid/1?screen=migrate   However when I run that page I get the following error:   <!-- Error :   null     Exception StackTrace: Cause level : 0 (level 0 is the most precise exception) java.lang.NullPointerException         at org.jahia.services.webdav.DAVFileAccess$NamespaceHelper.<init>(DAVFileAccess.java:1065)         at org.jahia.services.webdav.DAVFileAccess.setNamespace(DAVFileAccess.java:107)         at org.jahia.services.webdav.DAVFileAccess.<init>(DAVFileAccess.java:90)         at org.jahia.services.webdav.JahiaWebdavBaseService.getDAVFileAccess(JahiaWebdavBaseService.java:47)         at org.jahia.services.webdav.JahiaWebdavBaseService.migrate(JahiaWebdavBaseService.java:72)         at org.jahia.engines.filemanager.DAVFilemanager_Engine.handleActions(DAVFilemanager_Engine.java:193)         at org.jahia.operations.OperationManager.handleOperations(OperationManager.java:279)         at org.jahia.bin.JahiaAction.execute(JahiaAction.java:50)         at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)         at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)         at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)         at org.jahia.bin.Jahia.process(Jahia.java:1441)         at org.jahia.bin.Jahia.service(Jahia.java:766)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)         at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)         at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)         at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)         at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300)         at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374)         at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743)         at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:675)         at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866)         at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)         at java.lang.Thread.run(Thread.java:534)     -->     Any ideas?   Ps. The only step I had to do slightly different was the step:   “Your Jahia is now migrated, but the Tomcat which was packaged with your Jahia 3.1.4 is an older version (4.1.12 or 4.1.18) As Jahia 4.0 is packaged with Tomcat 4.1.27, you should replace the old version by this one.”   I had to use the latest stable version of Jahia as that’s all I could find on your website.   Regards,   Miles. IMPORTANT: This e-mail, including any attachments, may contain private or confidential information. If you think you may not be the intended recipient, or if you have received this e-mail in error, please contact the sender immediately and delete all copies of this e-mail. If you are not the intended recipient, you must not reproduce any part of this e-mail or disclose its contents to any other party. This email represents the views of the individual sender, which do not necessarily reflect those of education.au limited except where the sender expressly states otherwise. 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