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java.lang.NullPointerException: 	at org.eclipse.wst.common.componentcore.internal.util.VirtualReferenceUtilities.getDefaultProjectArchiveName(VirtualReferenceUtilities.java:81)	at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getJavaClasspathReferences(J2EEModuleVirtualComponent.java:338)	at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getNonManifestRefs(J2EEModuleVirtualComponent.java:242)	at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:166)	at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:214)	at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:207)	at org.eclipse.jst.jsp.core.internal.util.FacetModuleCoreSupportDelegate.resolveInReferenced(FacetModuleCoreSupportDelegate.java:179)	at org.eclipse.jst.jsp.core.internal.util.FacetModuleCoreSupportDelegate.resolve(FacetModuleCoreSupportDelegate.java:272)	at org.eclipse.jst.jsp.core.internal.util.FacetModuleCoreSupport.resolve(FacetModuleCoreSupport.java:195)	at org.eclipse.jst.jsp.core.taglib.ProjectDescription.resolve(ProjectDescription.java:1824)	at org.eclipse.jst.jsp.core.taglib.TaglibIndex.internalResolve(TaglibIndex.java:933)	at org.eclipse.jst.jsp.core.taglib.TaglibIndex.resolve(TaglibIndex.java:567)	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager.getCacheKey(TLDCMDocumentManager.java:715)	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager.getCMDocument(TLDCMDocumentManager.java:730)	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.enableTags(TLDCMDocumentManager.java:121)	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.processXMLStartTag(TLDCMDocumentManager.java:359)	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.processRegionCollection(TLDCMDocumentManager.java:182)	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.nodeParsed(TLDCMDocumentManager.java:191)	at org.eclipse.wst.xml.core.internal.parser.XMLSourceParser.fireNodeParsed(XMLSourceParser.java:135)	at org.eclipse.jst.jsp.core.internal.parser.JSPSourceParser.parseNodes(JSPSourceParser.java:296)	at org.eclipse.wst.xml.core.internal.parser.XMLSourceParser.getDocumentRegions(XMLSourceParser.java:173)	at org.eclipse.wst.sse.core.internal.text.StructuredDocumentReParser._core_reparse_text(StructuredDocumentReParser.java:355)	at org.eclipse.wst.sse.core.internal.text.StructuredDocumentReParser.core_reparse(StructuredDocumentReParser.java:752)	at org.eclipse.jst.jsp.core.internal.parser.JSPReParser.reparse(JSPReParser.java:153)	at org.eclipse.wst.sse.core.internal.text.StructuredDocumentReParser.reparse(StructuredDocumentReParser.java:1333)	at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.updateModel(BasicStructuredDocument.java:2713)	at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.internalReplaceText(BasicStructuredDocument.java:1923)	at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.replaceText(BasicStructuredDocument.java:2423)	at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.set(BasicStructuredDocument.java:2935)	at org.eclipse.core.internal.filebuffers.ResourceTextFileBuffer.setDocumentContent(ResourceTextFileBuffer.java:580)	at org.eclipse.core.internal.filebuffers.ResourceTextFileBuffer.initializeFileBufferContent(ResourceTextFileBuffer.java:288)	at org.eclipse.core.internal.filebuffers.ResourceFileBuffer.create(ResourceFileBuffer.java:245)	at org.eclipse.core.internal.filebuffers.TextFileBufferManager.connect(TextFileBufferManager.java:112)	at org.eclipse.wst.sse.core.internal.FileBufferModelManager.getModel(FileBufferModelManager.java:786)	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._doCommonGetModel(ModelManagerImpl.java:545)	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._commonGetModel(ModelManagerImpl.java:509)	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._commonGetModel(ModelManagerImpl.java:482)	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl.getModelForRead(ModelManagerImpl.java:1428)	at org.eclipse.jst.jsp.core.internal.java.search.JSPSearchDocument.getJSPTranslation(JSPSearchDocument.java:112)	at org.eclipse.jst.jsp.core.internal.java.search.JSPSearchDocument.getCharContents(JSPSearchDocument.java:77)	at org.eclipse.jst.jsp.core.internal.java.search.JavaSearchDocumentDelegate.getCharContents(JavaSearchDocumentDelegate.java:41)	at org.eclipse.jdt.internal.core.search.indexing.SourceIndexer.indexDocument(SourceIndexer.java:60)	at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.indexDocument(JavaSearchParticipant.java:73)	at org.eclipse.jst.jsp.core.internal.java.search.JSPSearchParticipant.indexDocument(JSPSearchParticipant.java:72)	at org.eclipse.jdt.internal.core.search.indexing.IndexManager.indexDocument(IndexManager.java:498)	at org.eclipse.jdt.internal.core.search.indexing.IndexManager$1.execute(IndexManager.java:938)	at org.eclipse.jdt.internal.core.search.processing.JobManager.run(JobManager.java:405)	at java.lang.Thread.run(Thread.java:744)