java.lang.AssertionError: docViewEndOffset=4350 < endOffset=11888
   at org.netbeans.modules.editor.lib2.view.ViewBuilder.<init>(ViewBuilder.java:153)
   at org.netbeans.modules.editor.lib2.view.ViewUpdates.buildViews(ViewUpdates.java:175)
   at org.netbeans.modules.editor.lib2.view.ViewUpdates.removeUpdate(ViewUpdates.java:476)
Caused: java.lang.reflect.InvocationTargetException
   at sun.reflect.GeneratedMethodAccessor236.invoke(GeneratedMethodAccessor236.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:459)
Caused: java.lang.reflect.UndeclaredThrowableException
   at $Proxy19.removeUpdate(.java:0)
   at org.netbeans.lib.editor.util.swing.PriorityDocumentListenerList.removeUpdate(PriorityDocumentListenerList.java:116)
   at javax.swing.text.AbstractDocument.fireRemoveUpdate(AbstractDocument.java:243)
   at org.netbeans.editor.BaseDocument.fireRemoveUpdate(BaseDocument.java:1673)
   at org.netbeans.editor.BaseDocumentEvent.undo(BaseDocumentEvent.java:295)
   at org.netbeans.editor.GuardedDocumentEvent.undo(GuardedDocumentEvent.java:72)
   at javax.swing.undo.CompoundEdit.undo(CompoundEdit.java:46)
   at org.netbeans.editor.BaseDocument$AtomicCompoundEdit.undo(BaseDocument.java:2223)
   at org.netbeans.editor.BaseDocument.breakAtomicLock(BaseDocument.java:1874)
   at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:320)
   at org.openide.text.NbDocument.runAtomic(NbDocument.java:422)
   at org.netbeans.modules.editor.guards.PositionBounds.setText(PositionBounds.java:248)
   at org.netbeans.modules.editor.guards.GuardedSectionImpl.setText(GuardedSectionImpl.java:181)
   at org.netbeans.modules.editor.guards.SimpleSectionImpl.setText(SimpleSectionImpl.java:76)
   at org.netbeans.api.editor.guards.SimpleSection.setText(SimpleSection.java:69)
   at org.netbeans.modules.form.JavaCodeGenerator.regenerateInitComponents(JavaCodeGenerator.java:1136)
   at org.netbeans.modules.form.JavaCodeGenerator.regenerateCode(JavaCodeGenerator.java:3499)
   at org.netbeans.modules.form.FormEditorSupport$JavaEditorTopComponent.componentShowing(FormEditorSupport.java:1320)
   at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:316)
   at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:286)
   at org.netbeans.core.multiview.MultiViewPeer$SelectionListener.selectionChanged(MultiViewPeer.java:635)
   at org.netbeans.core.multiview.MultiViewModel.fireSelectionChanged(MultiViewModel.java:246)
   at org.netbeans.core.multiview.MultiViewModel.setActiveDescription(MultiViewModel.java:118)
   at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:296)
   at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton.java:237)
   at javax.swing.ButtonGroup.setSelected(ButtonGroup.java:147)
   at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:292)
   at org.netbeans.core.multiview.TabsComponent$ButtonMouseListener.mousePressed(TabsComponent.java:461)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:263)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
   at java.awt.Component.processMouseEvent(Component.java:6286)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6054)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4652)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4482)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4577)
   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:4482)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:644)
   at java.awt.EventQueue.access$000(EventQueue.java:85)
   at java.awt.EventQueue$1.run(EventQueue.java:603)
   at java.awt.EventQueue$1.run(EventQueue.java:601)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
   at java.awt.EventQueue$2.run(EventQueue.java:617)
   at java.awt.EventQueue$2.run(EventQueue.java:615)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:614)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
   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)