java.lang.NullPointerException
	at org.apache.xerces.utils.StringPool.addSymbol(StringPool.java:348)
	at org.apache.xerces.readers.DefaultEntityHandler.addNotationDecl(DefaultEntityHandler.java:243)
	at org.apache.xerces.framework.XMLDTDScanner.scanNotationDecl(XMLDTDScanner.java:2580)
	at org.apache.xerces.framework.XMLDTDScanner.scanDecls(XMLDTDScanner.java:1451)
	at org.apache.xerces.framework.XMLDTDScanner.scanDoctypeDecl(XMLDTDScanner.java:1123)
	at org.apache.xerces.framework.XMLDocumentScanner.scanDoctypeDecl(XMLDocumentScanner.java:2192)
	at org.apache.xerces.framework.XMLDocumentScanner.access$000(XMLDocumentScanner.java:86)
	at org.apache.xerces.framework.XMLDocumentScanner$PrologDispatcher.dispatch(XMLDocumentScanner.java:883)
	at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
	at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:948)
	at org.apache.tools.ant.module.loader.AntProjectDataLoader.findPrimaryFile(AntProjectDataLoader.java:142)
	at org.openide.loaders.MultiFileLoader.handleFindDataObject(MultiFileLoader.java:55)
	at org.openide.loaders.DataObjectPool.callHandleFind(DataObjectPool.java:91)
	at org.openide.loaders.DataLoader.findDataObject(DataLoader.java:136)
	at org.openide.loaders.DataLoaderPool.findDataObject(DataLoaderPool.java:359)
	at org.openide.loaders.FolderList.createBoth(FolderList.java:489)
	at org.openide.loaders.FolderList.getObjects(FolderList.java:311)
	at org.openide.loaders.FolderList.access$2(FolderList.java)
	at org.openide.loaders.FolderList$ListTask.run(FolderList.java:627)
	at org.openide.util.Task.run(Task.java:124)
	at org.openide.util.RequestProcessor$ProcessorThread.run(RequestProcessor.java:562)