java.lang.AssertionError: setOrder([MultiFileObject@142bcd4[FormDesignerPalette/SwingControls/JLabel.palette_item], MultiFileObject@1cd573c[FormDesignerPalette/SwingControls/JButton.palette_item], MultiFileObject@1574a5f[FormDesignerPalette/SwingControls/JTextField.palette_item], MultiFileObject@18c1922[FormDesignerPalette/SwingControls/JToggleButton.palette_item], MultiFileObject@d2ca1d[FormDesignerPalette/SwingControls/JCheckBox.palette_item], MultiFileObject@e81e5f[FormDesignerPalette/SwingControls/JRadioButton.palette_item], MultiFileObject@19d9f69[FormDesignerPalette/SwingControls/ButtonGroup.palette_item], MultiFileObject@1f88b13[FormDesignerPalette/SwingControls/JComboBox.palette_item], MultiFileObject@55a561[FormDesignerPalette/SwingControls/JList.palette_item], MultiFileObject@c4b7e3[FormDesignerPalette/SwingControls/JTextArea.palette_item], MultiFileObject@ee3316[FormDesignerPalette/SwingControls/JScrollBar.palette_item], MultiFileObject@17b1050[FormDesignerPalette/SwingControls/JSlider.palette_item
   at org.openide.filesystems.Ordering.setOrder(Ordering.java:350)
   at org.openide.filesystems.FileUtil.setOrder(FileUtil.java:2198)
   at org.openide.loaders.FolderOrder.write(FolderOrder.java:187)
   at org.openide.loaders.FolderOrder.setOrder(FolderOrder.java:140)
   at org.openide.loaders.DataFolder.setOrder(DataFolder.java:249)
   at org.openide.loaders.DataFolder$Index.reorder(DataFolder.java:1011)
   at org.openide.nodes.Index$Support.move(Index.java:179)
   at org.netbeans.spi.palette.DragAndDropHandler.moveItem(DragAndDropHandler.java:221)
   at org.netbeans.spi.palette.DragAndDropHandler.doDrop(DragAndDropHandler.java:148)
   at org.netbeans.modules.palette.DefaultCategory.dropItem(DefaultCategory.java:235)
   at org.netbeans.modules.palette.ui.DnDSupport.drop(DnDSupport.java:223)
   at java.awt.dnd.DropTarget.drop(DropTarget.java:450)
   at sun.awt.dnd.SunDropTargetContextPeer.processDropMessage(SunDropTargetContextPeer.java:537)
   at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchDropEvent(SunDropTargetContextPeer.java:851)
   at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchEvent(SunDropTargetContextPeer.java:775)
   at sun.awt.dnd.SunDropTargetEvent.dispatch(SunDropTargetEvent.java:48)
   at java.awt.Component.dispatchEventImpl(Component.java:4715)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4686)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832)
   at java.awt.LightweightDispatcher.processDropTargetEvent(LightweightDispatcher.java:4566)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4417)
   at java.awt.Container.dispatchEventImpl(Container.java:2273)
   at java.awt.Window.dispatchEventImpl(Window.java:2713)
   at java.awt.Component.dispatchEvent(Component.java:4686)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
   at java.awt.EventQueue.access$000(EventQueue.java:101)
   at java.awt.EventQueue$3.run(EventQueue.java:666)
   at java.awt.EventQueue$3.run(EventQueue.java:664)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:680)
   at java.awt.EventQueue$4.run(EventQueue.java:678)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:153)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)