java.lang.AssertionError: Null children of pView[21] from <2,37>, rebuild<2,42>. cache integrity: null origDocView:
DV@4819fe4e#91 <0,4342> incomMod=false, lengthyAE=0
Regions: P<518,4332>, ChgFlags: <NONE>; visWidth:1236Gap: <0|0, vis[89]<1513.0|1.099511627776E12
[ 0]: PV@519dbba8#2 <0,26> y=0.0, WxH:208.0x17.0, chWxH=208.0x17.0
        [0]: HV@261695cf <0,25> x=0.0 TL=[25]W=200.0
        [1]: NV@14c55c92 <25,26> x=200.0
[ 1]: PV@4a8b3c74#1 <26,27> y=17.0, WxH:8.0x17.0, chWxH=8.0x17.0
        [0]: NV@29407fe5 <26,27> x=0.0
[ 2]: PV@1cfd5711 <27,56> y=34.0, WxH:232.0x17.0, children=null
[ 3]: PV@3c5f2bf5 <56,85> y=51.0, WxH:232.0x17.0, children=null
[ 4]: PV@0c3f00ca <85,123> y=68.0, WxH:304.0x17.0, children=null
[ 5]: PV@7c4cd40d <123,175> y=85.0, WxH:416.0x17.0, children=null
[ 6]: PV@17f5e13c <175,255> y=102.0, WxH:641.0x17.0, children=null
[ 7]: PV@0f96366e <255,287> y=119.0, WxH:256.0x17.0, children=null
[ 8]: PV@4ecf77c0 <287,288> y=136.0, WxH:8.0x17.0, children=null
[ 9]: PV@16bf06ac <288,345> y=153.0,
   at org.netbeans.modules.editor.lib2.view.DocumentViewChildren.ensureParagraphsChildrenAndLayoutValid(DocumentViewChildren.java:520)
   at org.netbeans.modules.editor.lib2.view.DocumentViewChildren.paint(DocumentViewChildren.java:554)
   at org.netbeans.modules.editor.lib2.view.DocumentView.paint(DocumentView.java:703)
   at org.netbeans.modules.editor.lib2.view.EditorView.paint(EditorView.java:162)
   at javax.swing.plaf.basic.BasicTextUI$RootView.paint(BasicTextUI.java:1422)
   at javax.swing.plaf.basic.BasicTextUI.paintSafely(BasicTextUI.java:722)
   at javax.swing.plaf.basic.BasicTextUI.paint(BasicTextUI.java:869)
   at javax.swing.plaf.basic.BasicTextUI.update(BasicTextUI.java:848)
   at javax.swing.JComponent.paintComponent(JComponent.java:752)
   at javax.swing.JComponent.paint(JComponent.java:1029)
   at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124)
   at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1491)
   at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1422)
   at javax.swing.RepaintManager.paint(RepaintManager.java:1225)
   at javax.swing.JComponent._paintImmediately(JComponent.java:5072)
   at javax.swing.JComponent.paintImmediately(JComponent.java:4882)
   at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:786)
   at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:714)
   at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:694)
   at javax.swing.RepaintManager.access$700(RepaintManager.java:41)
   at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1636)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:646)
   at java.awt.EventQueue.access$000(EventQueue.java:84)
   at java.awt.EventQueue$1.run(EventQueue.java:607)
   at java.awt.EventQueue$1.run(EventQueue.java:605)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:616)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:162)
   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)