java.lang.NullPointerException
   at org.netbeans.modules.options.editor.spi.OptionsFilter$FilteringTreeModel.treeNodesChanged(OptionsFilter.java:250)
   at javax.swing.tree.DefaultTreeModel.fireTreeNodesChanged(DefaultTreeModel.java:484)
   at javax.swing.tree.DefaultTreeModel.nodesChanged(DefaultTreeModel.java:351)
   at javax.swing.tree.DefaultTreeModel.nodeChanged(DefaultTreeModel.java:281)
   at org.netbeans.modules.java.hints.options.HintsPanelLogic.toggle(HintsPanelLogic.java:455)
   at org.netbeans.modules.java.hints.options.HintsPanelLogic.mouseClicked(HintsPanelLogic.java:253)
   at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270)
   at java.awt.Component.processMouseEvent(Component.java:6206)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:5968)
   at java.awt.Container.processEvent(Container.java:2105)
   at java.awt.Component.dispatchEventImpl(Component.java:4564)
   at java.awt.Container.dispatchEventImpl(Container.java:2163)
   at java.awt.Component.dispatchEvent(Component.java:4390)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4461)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4134)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4055)
   at java.awt.Container.dispatchEventImpl(Container.java:2149)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4390)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:649)
   at java.awt.EventQueue.access$000(EventQueue.java:96)
   at java.awt.EventQueue$1.run(EventQueue.java:608)
   at java.awt.EventQueue$1.run(EventQueue.java:606)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:116)
   at java.awt.EventQueue$2.run(EventQueue.java:622)
   at java.awt.EventQueue$2.run(EventQueue.java:620)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:619)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)