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java.lang.NullPointerException: 	at java.util.Hashtable.get(Hashtable.java:363)	at com.intellij.ide.hierarchy.HierarchyBrowserBaseEx.getBuilderForType(HierarchyBrowserBaseEx.java:453)	at com.intellij.ide.hierarchy.HierarchyBrowserBaseEx.getCurrentBuilder(HierarchyBrowserBaseEx.java:449)	at com.intellij.ide.hierarchy.ExporterToTextFileHierarchy.canExport(ExporterToTextFileHierarchy.java:98)	at com.intellij.ide.actions.ExportToTextFileAction.update(ExportToTextFileAction.java:55)	at com.intellij.openapi.actionSystem.ex.ActionUtil.performDumbAwareUpdate(ActionUtil.java:124)	at com.intellij.openapi.actionSystem.impl.Utils.a(Utils.java:234)	at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:179)	at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:122)	at com.intellij.openapi.actionSystem.impl.ActionToolbarImpl.a(ActionToolbarImpl.java:949)	at com.intellij.openapi.actionSystem.impl.ActionToolbarImpl.access$000(ActionToolbarImpl.java:62)	at com.intellij.openapi.actionSystem.impl.ActionToolbarImpl$2.updateActionsImpl(ActionToolbarImpl.java:181)	at com.intellij.openapi.actionSystem.impl.ToolbarUpdater$MyUpdateRunnable.run(ToolbarUpdater.java:186)	at com.intellij.openapi.actionSystem.impl.ToolbarUpdater.a(ToolbarUpdater.java:101)	at com.intellij.openapi.actionSystem.impl.ToolbarUpdater.updateActions(ToolbarUpdater.java:93)	at com.intellij.openapi.actionSystem.impl.ActionToolbarImpl.updateActionsImmediately(ActionToolbarImpl.java:942)	at com.intellij.openapi.actionSystem.impl.ActionToolbarImpl.addNotify(ActionToolbarImpl.java:215)	at java.awt.Container.addNotify(Container.java:2773)	at javax.swing.JComponent.addNotify(JComponent.java:4740)	at java.awt.Container.addNotify(Container.java:2773)	at javax.swing.JComponent.addNotify(JComponent.java:4740)	at java.awt.Container.addNotify(Container.java:2773)	at javax.swing.JComponent.addNotify(JComponent.java:4740)	at java.awt.Container.addNotify(Container.java:2773)	at javax.swing.JComponent.addNotify(JComponent.java:4740)	at java.awt.Container.addNotify(Container.java:2773)	at javax.swing.JComponent.addNotify(JComponent.java:4740)	at java.awt.Container.addNotify(Container.java:2773)	at javax.swing.JComponent.addNotify(JComponent.java:4740)	at java.awt.Container.addNotify(Container.java:2773)	at javax.swing.JComponent.addNotify(JComponent.java:4740)	at java.awt.Container.addNotify(Container.java:2773)	at javax.swing.JComponent.addNotify(JComponent.java:4740)	at java.awt.Container.addNotify(Container.java:2773)	at javax.swing.JComponent.addNotify(JComponent.java:4740)	at java.awt.Container.addImpl(Container.java:1121)	at java.awt.Container.add(Container.java:417)	at com.intellij.openapi.ui.ThreeComponentsSplitter.setLastComponent(ThreeComponentsSplitter.java:432)	at com.intellij.openapi.wm.impl.ToolWindowsPane.a(ToolWindowsPane.java:380)	at com.intellij.openapi.wm.impl.ToolWindowsPane.access$400(ToolWindowsPane.java:57)	at com.intellij.openapi.wm.impl.ToolWindowsPane$AddDockedComponentCmd.run(ToolWindowsPane.java:771)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.ToolWindowsPane$RemoveDockedComponentCmd.run(ToolWindowsPane.java:1056)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.commands.FinalizableCommand.finish(FinalizableCommand.java:36)	at com.intellij.openapi.wm.impl.commands.ApplyWindowInfoCmd.run(ApplyWindowInfoCmd.java:50)	at com.intellij.openapi.wm.impl.CommandProcessor.b(CommandProcessor.java:92)	at com.intellij.openapi.wm.impl.CommandProcessor.run(CommandProcessor.java:72)	at com.intellij.openapi.wm.impl.CommandProcessor.execute(CommandProcessor.java:64)	at com.intellij.openapi.wm.impl.ToolWindowManagerImpl.execute(ToolWindowManagerImpl.java:570)	at com.intellij.openapi.wm.impl.ToolWindowManagerImpl.activateToolWindow(ToolWindowManagerImpl.java:730)	at com.intellij.openapi.wm.impl.ToolWindowImpl.activate(ToolWindowImpl.java:202)	at com.intellij.openapi.wm.impl.ToolWindowImpl.activate(ToolWindowImpl.java:192)	at com.intellij.openapi.wm.impl.ToolWindowImpl.activate(ToolWindowImpl.java:187)	at com.intellij.ide.hierarchy.actions.BrowseHierarchyActionBase.createAndAddToPanel(BrowseHierarchyActionBase.java:103)	at com.intellij.ide.hierarchy.actions.BrowseHierarchyActionBase.actionPerformed(BrowseHierarchyActionBase.java:67)	at com.intellij.openapi.actionSystem.ex.ActionUtil$1.run(ActionUtil.java:208)	at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:224)	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher$1.performAction(IdeKeyEventDispatcher.java:570)	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.a(IdeKeyEventDispatcher.java:619)	at com.intellij.openapi.application.TransactionGuardImpl.performUserActivity(TransactionGuardImpl.java:202)	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.processAction(IdeKeyEventDispatcher.java:618)	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.f(IdeKeyEventDispatcher.java:477)	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.dispatchKeyEvent(IdeKeyEventDispatcher.java:211)	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:635)	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:367)	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)