java.lang.Throwable: Locked by:
Caused: org.openide.filesystems.FileAlreadyLockedException: Toolbars/Standard.xml
        at org.openide.filesystems.MultiFileObject.lock(MultiFileObject.java:643)
        at org.netbeans.modules.settings.ScheduledRequest.schedule(ScheduledRequest.java:107)
        at org.netbeans.modules.settings.ScheduledRequest.schedule(ScheduledRequest.java:98)
        at org.netbeans.modules.settings.SaveSupport$SaveCookieImpl.requestSave(SaveSupport.java:286)
        at org.netbeans.core.windows.view.ui.toolbars.ToolbarConfiguration.save(ToolbarConfiguration.java:482)
        at org.netbeans.core.windows.view.ui.toolbars.ToolbarConfiguration.setToolbarVisible(ToolbarConfiguration.java:409)
        at org.netbeans.core.windows.view.ui.toolbars.ToolbarConfiguration$1.actionPerformed(ToolbarConfiguration.java:170)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
        at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.java:291)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
        at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1170)
        at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1211)
        at java.awt.Component.processMouseEvent(Component.java:6038)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3260)
        at java.awt.Component.processEvent(Component.java:5803)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4410)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4322)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:3986)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:3916)
        at java.awt.Container.dispatchEventImpl(Container.java:2102)
        at java.awt.Window.dispatchEventImpl(Window.java:2429)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        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)