Dafür im Log Gui folgendes
18.07.2014 - 07:05:35.578 ERROR Throwable - Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
18.07.2014 - 07:05:35.578 ERROR Throwable - at server.gui.MainFrame.openOrCloseWindow(MainFrame.j ava:789)
18.07.2014 - 07:05:35.578 ERROR Throwable - at server.gui.MainFrame.access$1000(MainFrame.java:64 )
18.07.2014 - 07:05:35.578 ERROR Throwable - at server.gui.MainFrame$27.mouseClicked(MainFrame.jav a:620)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.TrayIcon.processMouseEvent(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.TrayIcon.processEvent(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.TrayIcon.dispatchEvent(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventQueue.access$200(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventQueue$3.run(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventQueue$3.run(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.security.AccessController.doPrivileged(Native Method)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventQueue$4.run(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventQueue$4.run(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.security.AccessController.doPrivileged(Native Method)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventQueue.dispatchEvent(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventDispatchThread.pumpOneEventForFilter s(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventDispatchThread.pumpEventsForFilter(U nknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.EventDispatchThread.pumpEventsForFilter(U nknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.WaitDispatchSupport$2.run(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.WaitDispatchSupport$4.run(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.security.AccessController.doPrivileged(Native Method)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.WaitDispatchSupport.enter(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.Dialog.show(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.Component.show(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.Component.setVisible(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.Window.setVisible(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at java.awt.Dialog.setVisible(Unknown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at server.gui.LauncherServerGUI.main(LauncherServerGU I.java:46)
18.07.2014 - 07:05:35.578 ERROR Throwable - at starter.Starter.main(Starter.java:227)
18.07.2014 - 07:05:35.578 ERROR Throwable - at server.gui.QuickStart$2.actionPerformed(QuickStart .java:84)
18.07.2014 - 07:05:35.578 ERROR Throwable - at javax.swing.AbstractButton.fireActionPerformed(Unk nown Source)
18.07.2014 - 07:05:35.578 ERROR Throwable - at javax.swing.AbstractButton$Handler.actionPerformed (Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at javax.swing.DefaultButtonModel.fireActionPerformed (Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at javax.swing.plaf.basic.BasicButtonListener.mouseRe leased(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.Component.processMouseEvent(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at javax.swing.JComponent.processMouseEvent(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.Component.processEvent(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.Container.processEvent(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.Component.dispatchEventImpl(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.Container.dispatchEventImpl(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.Component.dispatchEvent(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.LightweightDispatcher.retargetMouseEvent( Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.LightweightDispatcher.processMouseEvent(U nknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.LightweightDispatcher.dispatchEvent(Unkno wn Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.Container.dispatchEventImpl(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.Window.dispatchEventImpl(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.Component.dispatchEvent(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventQueue.access$200(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventQueue$3.run(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventQueue$3.run(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.security.AccessController.doPrivileged(Native Method)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventQueue$4.run(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventQueue$4.run(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.security.AccessController.doPrivileged(Native Method)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventQueue.dispatchEvent(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventDispatchThread.pumpOneEventForFilter s(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventDispatchThread.pumpEventsForFilter(U nknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventDispatchThread.pumpEventsForHierarch y(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
18.07.2014 - 07:05:35.593 ERROR Throwable - at java.awt.EventDispatchThread.run(Unknown Source)
18.07.2014 - 07:05:37.218 ERROR Throwable - Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
18.07.2014 - 07:05:37.218 ERROR Throwable - at server.gui.MainFrame.openOrCloseWindow(MainFrame.j ava:789)
18.07.2014 - 07:05:37.218 ERROR Throwable - at server.gui.MainFrame.access$1000(MainFrame.java:64 )
18.07.2014 - 07:05:37.218 ERROR Throwable - at server.gui.MainFrame$27.mouseClicked(MainFrame.jav a:620)
18.07.2014 - 07:05:37.218 ERROR Throwable - at java.awt.TrayIcon.processMouseEvent(Unknown Source)
18.07.2014 - 07:05:37.218 ERROR Throwable - at java.awt.TrayIcon.processEvent(Unknown Source)
18.07.2014 - 07:05:37.218 ERROR Throwable - at java.awt.TrayIcon.dispatchEvent(Unknown Source)
18.07.2014 - 07:05:37.218 ERROR Throwable - at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
18.07.2014 - 07:05:37.218 ERROR Throwable - at java.awt.EventQueue.access$200(Unknown Source)
18.07.2014 - 07:05:37.218 ERROR Throwable - at java.awt.EventQueue$3.run(Unknown Source)
18.07.2014 - 07:05:37.218 ERROR Throwable - at java.awt.EventQueue$3.run(Unknown Source)
18.07.2014 - 07:05:37.234 ERROR Throwable - at java.security.AccessController.doPrivileged(Native Method)
18.07.2014 - 07:05:37.234 ERROR Throwable - at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
18.07.2014 - 07:05:37.234 ERROR Throwable - at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
18.07.2014 - 07:05:37.234 ERROR Throwable - at java.awt.EventQueue$4.run(Unknown Source)
18.07.2014 - 07:05:37.234 ERROR Throwable - at java.awt.EventQueue$4.run(Unknown Source)
18.07.2014 - 07:05:37.234 ERROR Throwable - at java.security.AccessController.doPrivileged(Native Method)