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java.awt.HeadlessException: 	at java.awt.GraphicsEnvironment.checkHeadless(Unknown Source)	at java.awt.Window.(Unknown Source)	at java.awt.Frame.(Unknown Source)	at com.sun.deploy.ui.DialogTemplate.deriveParent(DialogTemplate.java:1585)	at com.sun.deploy.ui.DialogTemplate.(DialogTemplate.java:105)	at com.sun.deploy.ui.ProgressDialog.(ProgressDialog.java:37)	at com.sun.deploy.ui.UIFactory$10.execute(UIFactory.java:738)	at com.sun.javaws.ui.JavawsSysRun.delegate(JavawsSysRun.java:156)	at com.sun.deploy.util.DeploySysRun.execute(DeploySysRun.java:24)	at com.sun.deploy.ui.UIFactory.createProgressDialog(UIFactory.java:736)	at com.sun.javaws.ui.DownloadWindow.initialize(DownloadWindow.java:125)	at com.sun.javaws.ui.DownloadWindow.initialize(DownloadWindow.java:137)	at com.sun.javaws.ui.DownloadWindowHelper.get(DownloadWindowHelper.java:27)	at com.sun.javaws.Launcher.downloadResources(Launcher.java:1046)	at com.sun.javaws.Launcher.prepareLaunchFile(Launcher.java:629)	at com.sun.javaws.Launcher.prepareToLaunch(Launcher.java:207)	at com.sun.javaws.Launcher.launch(Launcher.java:101)	at com.sun.javaws.Main.launchApp(Main.java:311)	at com.sun.javaws.Main.continueInSecureThread(Main.java:215)	at com.sun.javaws.Main$1.run(Main.java:103)	at java.lang.Thread.run(Unknown Source)