java.lang.NullPointerException at java.io.DataOutputStream.writeUTF(DataOutputStream.java:330) at java.io.DataOutputStream.writeUTF(DataOutputStream.java:306) at org.netbeans.lib.profiler.results.memory.JMethodIdTable.writeToStream(JMethodIdTable.java:187) at org.netbeans.lib.profiler.results.memory.MemoryResultsSnapshot.writeToStream(MemoryResultsSnapshot.java:275) at org.netbeans.lib.profiler.results.memory.AllocMemoryResultsSnapshot.writeToStream(AllocMemoryResultsSnapshot.java:122) at org.netbeans.modules.profiler.LoadedSnapshot.save(LoadedSnapshot.java:287) at org.netbeans.modules.profiler.ResultsManager.saveSnapshot(ResultsManager.java:749) at org.netbeans.modules.profiler.ResultsManager.saveSnapshot(ResultsManager.java:820) at org.netbeans.modules.profiler.SnapshotResultsWindow.canClose(SnapshotResultsWindow.java:264) at org.netbeans.core.windows.Central.removeModeTopComponent(Central.java:953) at org.netbeans.core.windows.ModeImpl.removeTopComponent(ModeImpl.java:417) at org.netbeans.core.windows.ModeImpl.close(ModeImpl.java:246) at org.netbeans.core.windows.WindowManagerImpl.topComponentClose(WindowManagerImpl.java:1136) at org.openide.windows.TopComponent.close(TopComponent.java:555) at org.openide.windows.TopComponent.close(TopComponent.java:542) at org.netbeans.core.windows.actions.ActionUtils.closeAllDocuments(ActionUtils.java:277) at org.netbeans.core.windows.actions.CloseAllDocumentsAction.actionPerformed(CloseAllDocumentsAction.java:92) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.AbstractButton.doClick(AbstractButton.java:357) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264) at java.awt.Component.processMouseEvent(Component.java:6263) 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:4238) 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 com.sun.embeddedswing.EmbeddedEventQueue.dispatchEvent(EmbeddedEventQueue.java:448) 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)