java.lang.NullPointerException at javax.swing.text.View.setParent(View.java:339) at javax.swing.text.CompositeView.setParent(CompositeView.java:136) at javax.swing.text.html.BlockView.setParent(BlockView.java:72) at javax.swing.text.View.setParent(View.java:342) at javax.swing.text.CompositeView.setParent(CompositeView.java:136) at javax.swing.text.html.BlockView.setParent(BlockView.java:72) at javax.swing.text.html.HTMLEditorKit$HTMLFactory$BodyBlockView.setParent(HTMLEditorKit.java:1329) at javax.swing.text.View.setParent(View.java:342) at javax.swing.text.CompositeView.setParent(CompositeView.java:136) at javax.swing.text.html.BlockView.setParent(BlockView.java:72) at javax.swing.plaf.basic.BasicTextUI$RootView.setView(BasicTextUI.java:1325) at javax.swing.plaf.basic.BasicTextUI.setView(BasicTextUI.java:693) at javax.swing.plaf.basic.BasicTextUI$UpdateHandler.propertyChange(BasicTextUI.java:1784) at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263) at java.awt.Component.firePropertyChange(Component.java:8425) at javax.swing.text.JTextComponent.setDocument(JTextComponent.java:453) at javax.swing.JTextPane.setDocument(JTextPane.java:136) at javax.swing.JEditorPane.setEditorKit(JEditorPane.java:1058) at javax.swing.JTextPane.setEditorKit(JTextPane.java:473) at org.netbeans.modules.autoupdate.ui.DetailsPanel.removeNotify(DetailsPanel.java:125) at java.awt.Container.removeNotify(Container.java:2800) at javax.swing.JComponent.removeNotify(JComponent.java:4759) at java.awt.Container.removeNotify(Container.java:2800) at javax.swing.JComponent.removeNotify(JComponent.java:4759) at java.awt.Container.removeNotify(Container.java:2800) at javax.swing.JComponent.removeNotify(JComponent.java:4759) at java.awt.Container.removeNotify(Container.java:2800) at javax.swing.JComponent.removeNotify(JComponent.java:4759) at org.netbeans.modules.autoupdate.ui.UnitTab.removeNotify(UnitTab.java:340) at java.awt.Container.removeNotify(Container.java:2800) at javax.swing.JComponent.removeNotify(JComponent.java:4759) at java.awt.Container.removeNotify(Container.java:2800) at javax.swing.JComponent.removeNotify(JComponent.java:4759) at org.netbeans.modules.autoupdate.ui.PluginManagerUI.removeNotify(PluginManagerUI.java:224) at java.awt.Container.removeNotify(Container.java:2800) at javax.swing.JComponent.removeNotify(JComponent.java:4759) at java.awt.Container.removeNotify(Container.java:2800) at javax.swing.JComponent.removeNotify(JComponent.java:4759) at java.awt.Container.removeNotify(Container.java:2800) at javax.swing.JComponent.removeNotify(JComponent.java:4759) at javax.swing.JRootPane.removeNotify(JRootPane.java:765) at java.awt.Container.removeNotify(Container.java:2800) at java.awt.Window.removeNotify(Window.java:782) at org.netbeans.core.windows.services.NbPresenter.removeNotify(NbPresenter.java:474) at java.awt.Window$1DisposeAction.run(Window.java:1190) at java.awt.Window.doDispose(Window.java:1205) at java.awt.Dialog.doDispose(Dialog.java:1198) at java.awt.Window.dispose(Window.java:1147) at org.netbeans.core.windows.services.NbPresenter$ButtonListener.actionPerformed(NbPresenter.java:1400) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) at java.awt.Component.processMouseEvent(Component.java:6522) at javax.swing.JComponent.processMouseEvent(JComponent.java:3322) at java.awt.Component.processEvent(Component.java:6287) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4878) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4700) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4872) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4528) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4457) at java.awt.Container.dispatchEventImpl(Container.java:2273) at java.awt.Window.dispatchEventImpl(Window.java:2721) at java.awt.Component.dispatchEvent(Component.java:4700) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:728) at java.awt.EventQueue.access$200(EventQueue.java:103) at java.awt.EventQueue$3.run(EventQueue.java:687) at java.awt.EventQueue$3.run(EventQueue.java:685) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86) at java.awt.EventQueue$4.run(EventQueue.java:701) at java.awt.EventQueue$4.run(EventQueue.java:699) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) at java.awt.EventQueue.dispatchEvent(EventQueue.java:698) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:220) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:135) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:123) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:119) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:111) at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)