Mircea Toma added a comment - 21/Apr/11 10:36 AM - edited After running the application with a debugger I finally captured the NPE with a stack trace. The exception seems to point to a problem in the JSF code: java.lang.NullPointerException at com.sun.faces.facelets.tag.jsf.CompositeComponentTagHandler$CompositeComponentMetaRuleset$CompositeMetadataTarget.findDescriptor(CompositeComponentTagHandler.java:456) at com.sun.faces.facelets.tag.jsf.CompositeComponentTagHandler$CompositeComponentMetaRuleset$CompositeMetadataTarget.getPropertyType(CompositeComponentTagHandler.java:424) at com.sun.faces.facelets.tag.jsf.CompositeComponentTagHandler$CompositeComponentRule.applyRule(CompositeComponentTagHandler.java:498) at com.sun.faces.facelets.tag.MetaRulesetImpl.finish(MetaRulesetImpl.java:173) at com.sun.faces.facelets.tag.jsf.CompositeComponentTagHandler.setAttributes(CompositeComponentTagHandler.java:223) at com.sun.faces.facelets.tag.jsf.CompositeComponentTagHandler.applyNextHandler(CompositeComponentTagHandler.java:183) at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:188) at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:188) at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) at com.sun.faces.facelets.tag.ui.DefineHandler.applyDefinition(DefineHandler.java:103) at com.sun.faces.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:178) at com.sun.faces.facelets.impl.DefaultFaceletContext$TemplateManager.apply(DefaultFaceletContext.java:395) at com.sun.faces.facelets.impl.DefaultFaceletContext.includeDefinition(DefaultFaceletContext.java:366) at com.sun.faces.facelets.tag.ui.InsertHandler.apply(InsertHandler.java:108) at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137) at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:188) at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120) at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) at com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93) at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98) at com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:86) at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:308) at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:367) at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:346) at com.sun.faces.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:199) at com.sun.faces.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:155) at com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93) at com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:86) at com.sun.faces.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:152) at com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:744) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:100) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:410) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680)

Ted Goddard added a comment - 11/Aug/11 4:57 PM Previous race condition with multiple browser windows in auction: ICE-6129

Mircea Toma added a comment - 31/Aug/11 4:21 PM This issue seems to be gone in the newer version (2.1.1) of Mojarra.