java.lang.IllegalStateException: Attempt to mutate in notification
   at javax.swing.text.AbstractDocument.writeLock(AbstractDocument.java:1338)
   at javax.swing.text.AbstractDocument.replace(AbstractDocument.java:659)
   at javax.swing.text.JTextComponent.setText(JTextComponent.java:1718)
   at org.netbeans.modules.options.OptionsPanel.showHint(OptionsPanel.java:464)
   at org.netbeans.modules.options.OptionsPanel.access$800(OptionsPanel.java:125)
   at org.netbeans.modules.options.OptionsPanel$OptionsQSCallback.quickSearchCanceled(OptionsPanel.java:821)
   at org.openide.awt.QuickSearch$SearchFieldListener.searchForNode(QuickSearch.java:825)
   at org.openide.awt.QuickSearch$SearchFieldListener.removeUpdate(QuickSearch.java:755)
   at javax.swing.text.AbstractDocument.fireRemoveUpdate(AbstractDocument.java:260)
   at javax.swing.text.AbstractDocument.handleRemove(AbstractDocument.java:623)
   at javax.swing.text.AbstractDocument.remove(AbstractDocument.java:591)
   at javax.swing.text.AbstractDocument.replace(AbstractDocument.java:667)
   at javax.swing.text.JTextComponent.setText(JTextComponent.java:1718)
   at org.netbeans.modules.options.OptionsPanel.showHint(OptionsPanel.java:467)
   at org.netbeans.modules.options.OptionsPanel.access$800(OptionsPanel.java:125)
   at org.netbeans.modules.options.OptionsPanel$4.focusGained(OptionsPanel.java:398)
   at java.awt.AWTEventMulticaster.focusGained(AWTEventMulticaster.java:220)
   at java.awt.Component.processFocusEvent(Component.java:6405)
   at java.awt.Component.processEvent(Component.java:6272)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4872)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4698)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1887)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:938)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:570)
   at java.awt.Component.dispatchEventImpl(Component.java:4742)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4698)
   at sun.awt.SunToolkit$1.run(SunToolkit.java:506)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:738)
   at java.awt.EventQueue.access$300(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:699)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:708)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)