org.xml.sax.SAXParseException: Content is not allowed in prolog.
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1231)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
        at org.netbeans.core.xml.FileEntityResolver$DTDParser.parse(FileEntityResolver.java:430)
        at org.netbeans.core.xml.FileEntityResolver.getEnvForIDO(FileEntityResolver.java:171)
        at org.netbeans.core.xml.FileEntityResolver.getEnvironment(FileEntityResolver.java:164)
        at org.openide.loaders.Environment.findForOne(Environment.java:132)
        at org.openide.loaders.InstanceDataObject.getCookiesLookup(InstanceDataObject.java:603)
        at org.openide.loaders.InstanceDataObject.getCookiesLookup(InstanceDataObject.java:594)
        at org.openide.loaders.InstanceDataObject.getCookieFromEP(InstanceDataObject.java:557)
        at org.openide.loaders.InstanceDataObject.getCookie(InstanceDataObject.java:579)
        at org.netbeans.core.windows.persistence.PersistenceManager.getTopComponentPersistentForID(PersistenceManager.java:511)
        at org.netbeans.core.windows.persistence.PersistenceManager.getTopComponentForID(PersistenceManager.java:618)
        at org.netbeans.core.windows.PersistenceHandler.getTopComponentForID(PersistenceHandler.java:422)
        at org.netbeans.core.windows.PersistenceHandler.initModeFromConfig(PersistenceHandler.java:386)
        at org.netbeans.core.windows.PersistenceHandler.load(PersistenceHandler.java:205)
        at org.netbeans.core.windows.WindowSystemImpl.load(WindowSystemImpl.java:69)
        at org.netbeans.core.NonGui$3.run(NonGui.java:205)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)