java.lang.IndexOutOfBoundsException: Index: 3, Size: 3
   at java.util.ArrayList.RangeCheck(ArrayList.java:547)
   at java.util.ArrayList.get(ArrayList.java:322)
   at org.netbeans.swing.tabcontrol.DefaultTabDataModel.fireContentsChanged(DefaultTabDataModel.java:454)
   at org.netbeans.swing.tabcontrol.DefaultTabDataModel.setText(DefaultTabDataModel.java:159)
   at org.netbeans.swing.tabcontrol.TabbedContainer.setTitleAt(TabbedContainer.java:701)
   at org.netbeans.core.windows.view.ui.TabbedHandler.topComponentNameChanged(TabbedHandler.java:236)
   at org.netbeans.core.windows.view.ui.AbstractModeContainer.updateName(AbstractModeContainer.java:216)
   at org.netbeans.core.windows.view.ModeView.updateName(ModeView.java:169)
   at org.netbeans.core.windows.view.DefaultView.changeGUI(DefaultView.java:359)
   at org.netbeans.core.windows.ViewRequestor.dispatchRequest(ViewRequestor.java:269)
   at org.netbeans.core.windows.ViewRequestor.processRequest(ViewRequestor.java:245)
   at org.netbeans.core.windows.ViewRequestor.postRequest(ViewRequestor.java:183)
   at org.netbeans.core.windows.ViewRequestor.scheduleRequest(ViewRequestor.java:123)
   at org.netbeans.core.windows.Central.topComponentDisplayNameChanged(Central.java:1559)
   at org.netbeans.core.windows.WindowManagerImpl.topComponentDisplayNameChanged(WindowManagerImpl.java:1166)
   at org.netbeans.core.windows.WindowManagerImpl.topComponentHtmlDisplayNameChanged(WindowManagerImpl.java:1172)
   at org.openide.windows.TopComponent.setHtmlDisplayName(TopComponent.java:979)
   at org.netbeans.modules.form.FormEditorSupport.updateMVTCDisplayNameInAWT(FormEditorSupport.java:852)
   at org.netbeans.modules.form.FormEditorSupport.updateMVTCDisplayName(FormEditorSupport.java:832)
   at org.netbeans.modules.form.FormEditorSupport$6.propertyChange(FormEditorSupport.java:710)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at org.netbeans.core.windows.RegistryImpl.doFirePropertyChange(RegistryImpl.java:318)
   at org.netbeans.core.windows.RegistryImpl.topComponentOpened(RegistryImpl.java:187)
   at org.netbeans.core.windows.WindowManagerImpl.notifyRegistryTopComponentOpened(WindowManagerImpl.java:1005)
   at org.netbeans.core.windows.WindowManagerImpl.notifyTopComponentOpened(WindowManagerImpl.java:974)
   at org.netbeans.core.windows.Central.openGroup(Central.java:1167)
   at org.netbeans.core.windows.TopComponentGroupImpl.open(TopComponentGroupImpl.java:75)
   at org.netbeans.modules.form.FormEditorSupport.checkFormGroupVisibility(FormEditorSupport.java:951)
   at org.netbeans.modules.form.FormDesigner.finishComponentShowing(FormDesigner.java:1906)
   at org.netbeans.modules.form.FormDesigner.componentShowing(FormDesigner.java:1823)
   at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:295)
   at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:265)
   at org.netbeans.core.multiview.MultiViewPeer$SelectionListener.selectionChanged(MultiViewPeer.java:676)
   at org.netbeans.core.multiview.MultiViewModel.fireSelectionChanged(MultiViewModel.java:243)
   at org.netbeans.core.multiview.MultiViewModel.setActiveDescription(MultiViewModel.java:115)
   at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:293)
   at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton.java:237)
   at javax.swing.ButtonGroup.setSelected(ButtonGroup.java:147)
   at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:289)
   at org.netbeans.core.multiview.TabsComponent$ButtonMouseListener.mousePressed(TabsComponent.java:458)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:263)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
   at java.awt.Component.processMouseEvent(Component.java:6260)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6028)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4574)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4235)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:130)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)