java.lang.NoClassDefFoundError: org/netbeans/modules/java/hints/introduce/IntroduceHint
   at org.netbeans.modules.java.hints.introduce.IntroduceHint$HLFImpl.createLayers(IntroduceHint.java:952)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildAllLayersImpl(HighlightingManager.java:394)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting$4.run(HighlightingManager.java:375)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1386)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildAllLayers(HighlightingManager.java:372)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildAll(HighlightingManager.java:358)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.<init>(HighlightingManager.java:226)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager.<init>(HighlightingManager.java:174)
   at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager.getInstance(HighlightingManager.java:102)
   at org.netbeans.modules.editor.lib2.view.HighlightsViewFactory.<init>(HighlightsViewFactory.java:158)
   at org.netbeans.modules.editor.lib2.view.HighlightsViewFactory$HighlightsFactory.createEditorViewFactory(HighlightsViewFactory.java:429)
   at org.netbeans.modules.editor.lib2.view.ViewUpdates.initFactories(ViewUpdates.java:157)
   at org.netbeans.modules.editor.lib2.view.DocumentViewOp.parentViewSet(DocumentViewOp.java:581)
   at org.netbeans.modules.editor.lib2.view.DocumentView$4.run(DocumentView.java:637)
   at org.netbeans.modules.editor.lib2.view.DocumentView.runTransaction(DocumentView.java:226)
   at org.netbeans.modules.editor.lib2.view.DocumentView$1.run(DocumentView.java:239)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1386)
   at org.netbeans.modules.editor.lib2.view.DocumentView.runReadLockTransaction(DocumentView.java:236)
   at org.netbeans.modules.editor.lib2.view.DocumentView.setParent(DocumentView.java:632)
   at javax.swing.plaf.basic.BasicTextUI$RootView.setView(BasicTextUI.java:1328)
   at javax.swing.plaf.basic.BasicTextUI.setView(BasicTextUI.java:693)
   at org.netbeans.editor.BaseTextUI.modelChanged(BaseTextUI.java:159)
   at javax.swing.plaf.basic.BasicTextUI$UpdateHandler.propertyChange(BasicTextUI.java:1794)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
   at java.awt.Component.firePropertyChange(Component.java:8422)
   at javax.swing.text.JTextComponent.setDocument(JTextComponent.java:443)
   at javax.swing.JEditorPane.setEditorKit(JEditorPane.java:1058)
   at org.netbeans.modules.java.ui.CategorySupport.getPreviewComponent(CategorySupport.java:261)
   at org.netbeans.modules.java.ui.CategorySupport$DocumentCategorySupport.refreshPreview(CategorySupport.java:676)
   at org.netbeans.modules.java.ui.CategorySupport$1.run(CategorySupport.java:188)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:714)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)