It appears your classloader is picking up the wrong jar. If this is websphere 6, it comes with a jdom.jar that has given us problems similar to yours. Attempt to use the parent-first parent last setting; match with your working environment. It should be under the server(or node) properties. If this does not work, there is an article on ibm.com that I can try to find for you, a workaround for this issue.
Duane -----Original Message----- From: Adari, Chandra [mailto:[EMAIL PROTECTED] Sent: Monday, June 12, 2006 4:00 PM To: Struts Users Mailing List Subject: Problem loading/invoking struts app I am getting the following error during run time (ERROR Stack during Runtime) when I invoke the Login.do. Please find the error stack down below. I tried to put some debug statements and what I found was "module config" is coming "null". I tried the same exact ear on a different machine and it works just fine(included the debug messages as well). I don't do any custom configuration to the app server so I am not sure what the difference is. DEBUG STATEMENT from a non-working machine : [6/12/06 18:32:50:715 GMT] 00000055 SystemOut O Page /Login.do?from=index [6/12/06 18:32:50:715 GMT] 00000055 SystemOut O module config null DEBUG STATEMENT from a working machine : [6/4/06 15:46:24:138 PDT] 000000f3 SystemOut O Page /Login.do?from=index [6/4/06 15:46:24:138 PDT] 000000f3 SystemOut O module config [EMAIL PROTECTED] ERROR Stack during app server start up from non-working machine : [6/4/06 8:27:15:492 GMT] 0000000a Digester E org.apache.commons.digester.Digester getParser Digester.getParser: org.xml.sax.SAXNotRecognizedException: http://apache.org/xml/features/validation/dynamic at oracle.xml.jaxp.JXSAXParserFactory.setFeature(JXSAXParserFactory.java:12 8) at org.apache.commons.digester.parser.XercesParser.configureXerces(XercesPa rser.java:185) at org.apache.commons.digester.parser.XercesParser.newSAXParser(XercesParse r.java:138) at org.apache.commons.digester.ParserFeatureSetterFactory.newSAXParser(Pars erFeatureSetterFactory.java:73) at org.apache.commons.digester.Digester.getParser(Digester.java:682) at org.apache.commons.digester.Digester.getXMLReader(Digester.java:891) at org.apache.commons.digester.Digester.parse(Digester.java:1572) at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServl et.java:708) at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.ja va:670) at org.apache.struts.action.ActionServlet.init(ActionServlet.java:329) at javax.servlet.GenericServlet.init(GenericServlet.java:256) at com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapper.java: 274) at com.ibm.ws.webcontainer.servlet.ServletWrapper.initialize(ServletWrapper .java:1398) at com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor.createServlet Wrapper(WebExtensionProcessor.java:86) at com.ibm.ws.webcontainer.webapp.WebApp.getServletWrapper(WebApp.java:788) at com.ibm.ws.webcontainer.webapp.WebApp.initializeTargetMappings(WebApp.ja va:515) at com.ibm.ws.webcontainer.webapp.WebApp.initialize(WebApp.java:404) at com.ibm.ws.webcontainer.webapp.WebGroup.addWebApplication(WebGroup.java: 115) at com.ibm.ws.webcontainer.VirtualHost.addWebApplication(VirtualHost.java:1 28) at com.ibm.ws.webcontainer.WebContainer.addWebApp(WebContainer.java:924) at com.ibm.ws.webcontainer.WebContainer.addWebApplication(WebContainer.java :877) ERROR Stack during Run time from non-working machine : "[6/12/06 18:32:50:717 GMT] 00000055 ServletWrappe E SRVE0068E: Could not invoke the service() method on servlet /index.jsp. Exception thrown : java.lang.NullPointerException at org.apache.struts.taglib.TagUtils.pageURL(TagUtils.java:1118) at org.apache.struts.taglib.TagUtils.computeURLWithCharEncoding(TagUtils.ja va:466) at org.apache.struts.taglib.TagUtils.computeURLWithCharEncoding(TagUtils.ja va:329) at org.apache.struts.taglib.logic.RedirectTag.generateRedirectURL(RedirectT ag.java:296) at org.apache.struts.taglib.logic.RedirectTag.doEndTag(RedirectTag.java:270 ) at com.ibm._jsp._index._jspx_meth_logic_redirect_0(_index.java:101) at com.ibm._jsp._index._jspService(_index.java:75) at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:91) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.ja va:1282) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrap per.java:673) at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(G enericServletWrapper.java:117) at com.ibm.ws.jsp.webcontainerext.JSPExtensionServletWrapper.handleRequest( JSPExtensionServletWrapper.java:178) at com.ibm.ws.jsp.webcontainerext.JSPExtensionProcessor.handleRequest(JSPEx tensionProcessor.java:252) at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppReq uestDispatcher.java:322) at com.ibm.ws.webcontainer.extension.DefaultExtensionProcessor.handleReques t(DefaultExtensionProcessor.java:482) at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:2965) at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:221) at com.ibm.ws.webcontainer.VirtualHost.handleRequest(VirtualHost.java:210) at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:193 1) at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:8 4) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscriminatio n(HttpInboundLink.java:472) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformatio n(HttpInboundLink.java:411) at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpIC LReadCallback.java:101) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.requestComplete(WorkQueueMa nager.java:566) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.attemptIO(WorkQueueManager. java:619) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.workerRun(WorkQueueManager. java:952) at com.ibm.ws.tcp.channel.impl.WorkQueueManager$Worker.run(WorkQueueManager .java:1039) at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java(Compiled Code))" Any help is greatly appreciated. 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