java.lang.AssertionError
        at org.openide.awt.AlwaysEnabledAction.isEnabled(AlwaysEnabledAction.java:72)
        at javax.swing.AbstractAction.setEnabledFromAction(AbstractAction.java:85)
        at javax.swing.AbstractButton.configurePropertiesFromAction(AbstractButton.java:1145)
        at javax.swing.JMenuItem.configurePropertiesFromAction(JMenuItem.java:359)
        at javax.swing.AbstractButton.setAction(AbstractButton.java:1087)
        at org.netbeans.modules.editor.MainMenuAction.setMenu(MainMenuAction.java:206)
        at org.netbeans.modules.editor.java.JavaKit$JavaFixImports$GlobalAction.<init>(JavaKit.java:837)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeConstructorAccessorImpl.java:0)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at java.lang.Class.newInstance0(Class.java:355)
        at java.lang.Class.newInstance(Class.java:308)
        at org.openide.loaders.InstanceSupport.instanceCreate(InstanceSupport.java:219)
        at org.openide.loaders.InstanceDataObject$Ser.instanceCreate(InstanceDataObject.java:1265)
        at org.openide.loaders.InstanceDataObject.instanceCreate(InstanceDataObject.java:749)
        at org.openide.loaders.FolderInstance.instanceForCookie(FolderInstance.java:572)
        at org.openide.loaders.FolderInstance$HoldInstance.instanceCreate(FolderInstance.java:1122)
        at org.openide.loaders.FolderInstance$1R.instances(FolderInstance.java:692)
        at org.openide.loaders.FolderInstance$1R.run(FolderInstance.java:713)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)