java.net.SocketException: Unexpected end of file from server
        at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:769)
        at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:632)
        at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:766)
        at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:632)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1000)
        at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:373)
        at javax.swing.JEditorPane.getStream(JEditorPane.java:777)
        at javax.swing.JEditorPane.setPage(JEditorPane.java:418)
        at org.netbeans.modules.uihandler.Installer$SubmitInteractive.assignInternalURL(Installer.java:1887)
        at org.netbeans.modules.uihandler.Installer$Submit.doShow(Installer.java:1425)
        at org.netbeans.modules.uihandler.Installer.doDisplaySummary(Installer.java:983)
        at org.netbeans.modules.uihandler.Installer.displaySummary(Installer.java:911)
        at org.netbeans.modules.uihandler.Installer.displaySummary(Installer.java:919)
        at org.netbeans.modules.uihandler.UIHandler.run(UIHandler.java:140)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)