WARNING [org.netbeans.core.windows.WindowManagerImpl]
java.lang.IllegalStateException: Assertion failed. WindowsAPI is required to be called from AWT thread only, see http://core.netbeans.org/proposals/threading/
        at org.netbeans.core.windows.WindowManagerImpl.assertEventDispatchThreadWeak(WindowManagerImpl.java:1387)
        at org.netbeans.core.windows.WindowManagerImpl.topComponentID(WindowManagerImpl.java:1154)
        at org.openide.windows.WindowManager.findTopComponentID(WindowManager.java:465)
        at org.netbeans.core.windows.model.TopComponentSubModel.getID(TopComponentSubModel.java:333)
        at org.netbeans.core.windows.model.TopComponentSubModel.containsTopComponent(TopComponentSubModel.java:232)
        at org.netbeans.core.windows.model.DefaultModeModel.containsTopComponent(DefaultModeModel.java:238)
        at org.netbeans.core.windows.model.DefaultModel.containsModeTopComponent(DefaultModel.java:777)
        at org.netbeans.core.windows.Central.containsModeTopComponent(Central.java:1357)
        at org.netbeans.core.windows.ModeImpl.containsTopComponent(ModeImpl.java:338)
        at org.netbeans.core.windows.WindowManagerImpl.findMode(WindowManagerImpl.java:402)
        at org.netbeans.core.windows.actions.CloneDocumentAction.updateEnabled(CloneDocumentAction.java:74)
        at org.netbeans.core.windows.actions.CloneDocumentAction.<init>(CloneDocumentAction.java:46)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        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:197)
        at org.openide.loaders.InstanceDataObject$Ser.instanceCreate(InstanceDataObject.java:1192)
        at org.openide.loaders.InstanceDataObject.instanceCreate(InstanceDataObject.java:695)
        at org.netbeans.modules.options.keymap.LayersBridge.createAction(LayersBridge.java:334)
        at org.netbeans.modules.options.keymap.LayersBridge.initActions(LayersBridge.java:128)
        at org.netbeans.modules.options.keymap.LayersBridge.initActions(LayersBridge.java:92)
        at org.netbeans.modules.options.keymap.LayersBridge.getActions(LayersBridge.java:72)
        at org.netbeans.modules.options.keymap.KeymapModel.getActionCategories(KeymapModel.java:48)
        at org.netbeans.modules.options.keymap.KeymapModel.<init>(KeymapModel.java:253)
        at org.netbeans.modules.options.keymap.KeymapViewModel.<init>(KeymapViewModel.java:61)
        at org.netbeans.modules.options.keymap.KeymapPanel.getModel(KeymapPanel.java:332)
        at org.netbeans.modules.options.keymap.KeymapPanelController.getLookup(KeymapPanelController.java:63)
        at org.netbeans.modules.options.CategoryModel$Category.getLookup(CategoryModel.java:394)
        at org.netbeans.modules.options.CategoryModel$Category.access$000(CategoryModel.java:283)
        at org.netbeans.modules.options.CategoryModel$1.run(CategoryModel.java:68)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:541)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:963)