[jboss-user] [JBoss Tools (users)] - jboss tools and j2ee project problem

I use jboss tools 2.0GA installed on eclipse wtp 2.0.1 with window xp sp2. I have an ear project which contains one ejb project and one web project with only one simple servlet client that access ejb. (all of them xdoclet enabled for jboss 4.2.2). Whenever I start eclipse, the following error occurs. Without the above projects, no error occurs. With wtp alone and the above projects(ie without jbosstools), no error occurs. How can I avoid this error. Although the error occurs at startup, I can run the project without any problems. (this is copied from the log of the error) !ENTRY org.eclipse.core.jobs 4 2 2008-01-06 15:38:52.406 !MESSAGE An internal error occurred during: "Initializing Java Tooling". !STACK 0 java.lang.NullPointerException at org.eclipse.emf.ecore.resource.impl.ResourceImpl.getEObject(ResourceImpl.java:718) at org.eclipse.wst.common.componentcore.internal.util.HRefTranslator.convertStringToValue(HRefTranslator.java:78) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.extractValue(EMF2DOMAdapterImpl.java:1151) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOFFeature(EMF2DOMAdapterImpl.java:1394) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOFFeature(EMF2DOMAdapterImpl.java:1773) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOF(EMF2DOMAdapterImpl.java:933) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOF(EMF2DOMAdapterImpl.java:913) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOFMultiFeature(EMF2DOMAdapterImpl.java:461) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOFMultiFeature(EMF2DOMAdapterImpl.java:1486) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOFMultiFeature(EMF2DOMAdapterImpl.java:1700) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOFFeature(EMF2DOMAdapterImpl.java:1755) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOF(EMF2DOMAdapterImpl.java:933) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOF(EMF2DOMAdapterImpl.java:913) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOFMultiFeature(EMF2DOMAdapterImpl.java:461) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOFMultiFeature(EMF2DOMAdapterImpl.java:1486) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOFMultiFeature(EMF2DOMAdapterImpl.java:1700) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOFFeature(EMF2DOMAdapterImpl.java:1755) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOF(EMF2DOMAdapterImpl.java:933) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOF(EMF2DOMAdapterImpl.java:913) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOFMultiFeature(EMF2DOMAdapterImpl.java:461) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOFRootFeature(EMF2DOMAdapterImpl.java:954) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.primUpdateMOF(EMF2DOMAdapterImpl.java:929) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMAdapterImpl.updateMOF(EMF2DOMAdapterImpl.java:913) at org.eclipse.wst.common.internal.emf.resource.EMF2DOMRenderer.doLoad(EMF2DOMRenderer.java:64) at org.eclipse.wst.common.internal.emf.resource.TranslatorResourceImpl.basicDoLoad(TranslatorResourceImpl.java:144) at org.eclipse.wst.common.internal.emf.resource.CompatibilityXMIResourceImpl.doLoad(CompatibilityXMIResourceImpl.java:175) at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1354) at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1155) at org.eclipse.wst.common.internal.emf.resource.CompatibilityXMIResourceImpl.load(CompatibilityXMIResourceImpl.java:261) at org.eclipse.wst.common.internal.emf.resource.TranslatorResourceImpl.load(TranslatorResourceImpl.java:390) at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:256) at org.eclipse.jem.internal.util.emf.workbench.ProjectResourceSetImpl.demandLoad(ProjectResourceSetImpl.java:143) at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:271) at org.eclipse.jem.internal.util.emf.workbench.ProjectResourceSetImpl.getResource(ProjectResourceSetImpl.java:390) at org.eclipse.wst.common.internal.emfworkbench.WorkbenchResourceHelper.getOrCreateResource(WorkbenchResourceHelper.java:384) at org.eclipse.wst.common.internal.emfworkbench.integration.EditModel.getResource(EditModel.java:684) at org.eclipse.wst.common.componentcore.internal.ModuleStructuralModel.getPrimaryResource(ModuleStructuralModel.java:303) at org.eclipse.wst.common.componentcore.internal.ModuleStructuralModel.prepareProjectModulesIfNecessary(ModuleStructuralModel.java:241) at org.eclipse.wst.common.componentcore.internal.ModuleStructuralModel.getPrimaryRootObject(ModuleStructuralModel.java:115) at org.eclipse.wst.common.componentcore.internal.StructureEdit.getComponentModelRoot(StructureEdit.java:450) at org.eclipse.wst.common.componentcore.internal.StructureEdit.getWorkbenchModules(StructureEdit.java:486) at org.eclipse.wst.common.componentcore.internal.StructureEdit.getComponent(StructureEdit.java:929) at org.eclipse.jst.j2ee.componentcore.util.EARVirtualComponent.getHardReferences(EARVirtualComponent.java:87) at org.eclipse.jst.j2ee.componentcore.util.EARVirtualComponent.getReferences(EARVirtualComponent.java:187) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getManifestReferences(J2EEModuleVirtualComponent.java:255) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:86) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:79) at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathContainer.update(J2EEComponentClasspathContainer.java:163) at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathContainer.install(J2EEComponentClasspathContainer.java:281) at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathInitializer.initialize(J2EEComponentClasspathInitializer.java:29) at org.eclipse.jdt.internal.core.JavaModelManager.initializeContainer(JavaModelManager.java:2218) at org.eclipse.jdt.internal.core.JavaModelManager$9.run(JavaModelManager.java:2148) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1797) at org.eclipse.jdt.internal.core.JavaModelManager.initializeAllContainers(JavaModelManager.java:2164) at org.eclipse.jdt.internal.core.JavaModelManager.getClasspathContainer(JavaModelManager.java:1544) at org.eclipse.jdt.core.JavaCore.getClasspathContainer(JavaCore.java:1571) at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2558) at org.eclipse.jdt.internal.core.JavaProject.getResolvedClasspath(JavaProject.java:1848) at org.eclipse.jdt.core.JavaCore.initializeAfterLoad(JavaCore.java:3254) at org.eclipse.jdt.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:35) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4117358#... 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