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:856)
   at org.netbeans.modules.form.FormEditorSupport.updateMVTCDisplayName(FormEditorSupport.java:836)
   at org.netbeans.modules.form.FormEditorSupport.notifyUnmodified(FormEditorSupport.java:667)
   at org.openide.text.CloneableEditorSupport.callNotifyUnmodified(CloneableEditorSupport.java:1911)
   at org.openide.text.CloneableEditorSupport$1SaveAsReader.after(CloneableEditorSupport.java:1057)
   at org.openide.text.CloneableEditorSupport.saveDocument(CloneableEditorSupport.java:1074)
   at org.openide.text.DataEditorSupport.superSaveDoc(DataEditorSupport.java:511)
   at org.openide.text.DataEditorSupport$SaveImpl.run(DataEditorSupport.java:1186)
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:122)
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:539)
   at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:557)
   at org.openide.text.DataEditorSupport.saveDocument(DataEditorSupport.java:507)
   at org.netbeans.modules.form.FormEditorSupport.saveDocument(FormEditorSupport.java:371)
   at org.netbeans.modules.form.FormEditorSupport$9.doSave(FormEditorSupport.java:1474)
   at org.netbeans.modules.form.FormEditorSupport$9.save(FormEditorSupport.java:1454)
   at org.openide.actions.SaveAction.performAction(SaveAction.java:112)
   at org.openide.actions.SaveAction.performAction(SaveAction.java:92)
   at org.openide.actions.SaveAction$Delegate.actionPerformed(SaveAction.java:229)
   at org.openide.awt.ContextAction$Performer.actionPerformed(ContextAction.java:228)
   at org.openide.awt.ContextManager.actionPerformed(ContextManager.java:237)
   at org.openide.awt.ContextAction.actionPerformed(ContextAction.java:106)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:90)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:113)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:96)
   at org.openide.awt.GeneralAction$DelegateAction.actionPerformed(GeneralAction.java:216)
   at org.openide.windows.TopComponent.processKeyBinding(TopComponent.java:1106)
   at javax.swing.JComponent.processKeyBindings(JComponent.java:2885)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2802)
   at org.netbeans.modules.form.HandleLayer.processKeyEvent(HandleLayer.java:824)
   at java.awt.Component.processEvent(Component.java:6040)
   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.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1850)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:712)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:990)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:855)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:676)
   at java.awt.Component.dispatchEventImpl(Component.java:4502)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Window.dispatchEventImpl(Window.java:2475)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:133)
   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)