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java.lang.NullPointerException: 	at oracle.adfdtinternal.model.ide.managers.ApplicationManager.getAppForJarCpx(ApplicationManager.java:540)	at oracle.adfdtinternal.model.ide.managers.ApplicationManager.getJarApplication(ApplicationManager.java:516)	at oracle.adfdtinternal.model.ide.managers.ApplicationManager._loadApplicationFromLibrary(ApplicationManager.java:615)	at oracle.adfdtinternal.model.ide.managers.ApplicationManager.findApplication(ApplicationManager.java:324)	at oracle.adfdtinternal.model.ide.managers.ApplicationManager.findApplicationUsingNode(ApplicationManager.java:948)	at oracle.adfdtinternal.model.ide.managers.PageDefinitionManager.findPageDefinitionFromLibrary(PageDefinitionManager.java:208)	at oracle.adfdtinternal.model.ide.managers.PageDefinitionManager.findPageDefinitionFromContext(PageDefinitionManager.java:930)	at oracle.adfdtinternal.model.ide.managers.PageDefinitionManager.findPageDefinition(PageDefinitionManager.java:183)	at oracle.adfdtinternal.model.ide.insight.ADFVariableProvider.findPageDefinition(ADFVariableProvider.java:742)	at oracle.adfdtinternal.model.ide.insight.ADFVariableProvider.getVariables(ADFVariableProvider.java:712)	at oracle.adfdtinternal.model.ide.insight.ADFVariableProvider.getVariables(ADFVariableProvider.java:691)	at oracle.jdeveloper.el.VariableProvider.propertyExists(VariableProvider.java:229)	at oracle.adfdtinternal.model.ide.insight.ADFVariableProvider.propertyExists(ADFVariableProvider.java:865)	at oracle.jdeveloper.el.ELManager.propertyExists(ELManager.java:400)	at oracle.jdeveloper.webapp.xdf.AbstractELReferenceFactory.addUnknownReferences(AbstractELReferenceFactory.java:239)	at oracle.jdeveloper.webapp.xdf.AbstractELReferenceFactory.getReferencesIfNecessary(AbstractELReferenceFactory.java:184)	at oracle.jdeveloper.webapp.xdf.AbstractELReferenceFactory.getReferences(AbstractELReferenceFactory.java:80)	at oracle.bali.xml.model.dependency.TraversalReferenceFactory.handleStartNode(TraversalReferenceFactory.java:33)	at oracle.bali.xml.model.traversal.XmlTraversalHandler._handleStartNode(XmlTraversalHandler.java:56)	at oracle.bali.xml.model.traversal.XmlTraversalHandler.handleStartNode(XmlTraversalHandler.java:30)	at oracle.bali.xml.model.XmlModel._handleStartNode(XmlModel.java:3215)	at oracle.bali.xml.model.XmlModel._handleNode(XmlModel.java:3198)	at oracle.bali.xml.model.XmlModel._handleNode(XmlModel.java:3204)	at oracle.bali.xml.model.XmlModel._handleNode(XmlModel.java:3204)	at oracle.bali.xml.model.XmlModel._handleNode(XmlModel.java:3204)	at oracle.bali.xml.model.XmlModel._handleNode(XmlModel.java:3204)	at oracle.bali.xml.model.XmlModel._rebuildTraversalData(XmlModel.java:3191)	at oracle.bali.xml.model.XmlModel.getTraversalData(XmlModel.java:999)	at oracle.bali.xml.model.dependency.DependencyContext.getTraversalData(DependencyContext.java:34)	at oracle.adfmf.framework.dt.editor.feature.FeatureIdReference._findDeclarationFromFeatureXml(FeatureIdReference.java:207)	at oracle.adfmf.framework.dt.editor.feature.FeatureIdReference.findDeclaration(FeatureIdReference.java:89)	at oracle.bali.xml.gui.jdev.audit.XdfAnalyzer._reportUnusedReferences(XdfAnalyzer.java:121)	at oracle.bali.xml.gui.jdev.audit.XdfAnalyzer.enter(XdfAnalyzer.java:78)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at oracle.jdevimpl.audit.core.BoundMethod.invoke(BoundMethod.java:83)	at oracle.jdevimpl.audit.core.DefaultAuditContext.invoke(DefaultAuditContext.java:299)	at oracle.jdevimpl.audit.core.DefaultAuditContext.invokeEnterMethods(DefaultAuditContext.java:245)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitLowerTree(DefaultAuditor.java:1780)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitLowerTree(DefaultAuditor.java:1790)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitLowerTree(DefaultAuditor.java:1790)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseConstruct(DefaultAuditor.java:1729)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitUpperTree(DefaultAuditor.java:1427)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseModel(DefaultAuditor.java:1562)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitUpperTree(DefaultAuditor.java:1423)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseConstruct(DefaultAuditor.java:1725)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitUpperTree(DefaultAuditor.java:1427)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseModel(DefaultAuditor.java:1562)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitUpperTree(DefaultAuditor.java:1423)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseConstruct(DefaultAuditor.java:1725)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitUpperTree(DefaultAuditor.java:1427)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseModel(DefaultAuditor.java:1562)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitUpperTree(DefaultAuditor.java:1423)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseConstruct(DefaultAuditor.java:1725)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitUpperTree(DefaultAuditor.java:1427)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseModel(DefaultAuditor.java:1562)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitUpperTree(DefaultAuditor.java:1423)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseConstruct(DefaultAuditor.java:1725)	at oracle.jdevimpl.audit.core.DefaultAuditor.visitUpperTree(DefaultAuditor.java:1427)	at oracle.jdevimpl.audit.core.DefaultAuditor.traverseModel(DefaultAuditor.java:1562)	at oracle.jdevimpl.audit.core.DefaultAuditor.audit(DefaultAuditor.java:1191)	at oracle.jdevimpl.audit.core.DefaultAuditor.tryAudit(DefaultAuditor.java:918)	at oracle.ide.status.StatusMonitor$StatusTask.run(StatusMonitor.java:697)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:745)