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.NbEditorKit.call(NbEditorKit.java:1318)
   at org.netbeans.modules.java.editor.JavaEditorWarmUpTask.run(JavaEditorWarmUpTask.java:170)
   at org.netbeans.modules.java.editor.JavaEditorWarmUpTask$Provider.run(JavaEditorWarmUpTask.java:93)
   at org.netbeans.core.startup.WarmUpSupport.run(WarmUpSupport.java:98)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1425)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:59)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:294)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2038)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NoClassDefFoundError: org/netbeans/modules/java/hints/introduce/IntroduceHint
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1466)
   at org.netbeans.core.startup.WarmUpSupport.warmUp(WarmUpSupport.java:75)
   at org.netbeans.core.startup.MainLookup.warmUp(MainLookup.java:84)
   at org.netbeans.core.GuiRunLevel$InitWinSys$1.run(GuiRunLevel.java:254)
   at org.netbeans.core.windows.WindowManagerImpl$Exclusive$1.run(WindowManagerImpl.java:1563)
   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)