org.eclipse.core.internal.resources.ResourceException: The resource tree is locked for modifications.
	at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:116)
	at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:2251)
	at org.eclipse.core.internal.resources.Project.setDescription(Project.java:1322)
	at org.eclipse.core.internal.resources.Project.setDescription(Project.java:1376)
	at tern.eclipse.ide.core.TernNature.configure(TernNature.java:59)
	at tern.eclipse.ide.internal.core.IDETernProject.ensureNatureIsConfigured(IDETernProject.java:817)
	at tern.eclipse.ide.internal.core.IDETernProject.<init>(IDETernProject.java:111)
	at tern.eclipse.ide.internal.core.IDETernProject.getTernProject(IDETernProject.java:134)
	at tern.eclipse.ide.core.TernCorePlugin.getTernProject(TernCorePlugin.java:99)
	at tern.eclipse.ide.jsdt.internal.JSDTClassPathManager.elementChanged(JSDTClassPathManager.java:67)
	at org.eclipse.wst.jsdt.internal.core.DeltaProcessor$3.run(DeltaProcessor.java:1591)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.wst.jsdt.internal.core.DeltaProcessor.notifyListeners(DeltaProcessor.java:1581)
	at org.eclipse.wst.jsdt.internal.core.DeltaProcessor.firePostChangeDelta(DeltaProcessor.java:1416)
	at org.eclipse.wst.jsdt.internal.core.DeltaProcessor.fire(DeltaProcessor.java:1392)
	at org.eclipse.wst.jsdt.internal.core.DeltaProcessor.resourceChanged(DeltaProcessor.java:1945)
	at org.eclipse.wst.jsdt.internal.core.DeltaProcessingState.resourceChanged(DeltaProcessingState.java:389)
	at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
	at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
	at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:378)
	at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1498)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2322)
	at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118)
	at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:75)
	at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:65)
	at org.eclipse.ui.editors.text.TextFileDocumentProvider.executeOperation(TextFileDocumentProvider.java:456)
	at org.eclipse.ui.editors.text.TextFileDocumentProvider.saveDocument(TextFileDocumentProvider.java:772)
	at org.eclipse.ui.texteditor.AbstractTextEditor.performSave(AbstractTextEditor.java:5076)
	at org.eclipse.ui.texteditor.AbstractTextEditor.doSave(AbstractTextEditor.java:4866)
	at org.eclipse.wst.sse.ui.StructuredTextEditor.doSave(StructuredTextEditor.java:1917)
	at org.eclipse.thym.ui.config.internal.ConfigEditor.doSave(ConfigEditor.java:81)
	at org.eclipse.ui.internal.SaveableHelper$2.run(SaveableHelper.java:154)
	at org.eclipse.ui.internal.SaveableHelper$5.run(SaveableHelper.java:283)
	at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:466)
	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:374)
	at org.eclipse.ui.internal.WorkbenchWindow$13.run(WorkbenchWindow.java:2157)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2153)
	at org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOperation(SaveableHelper.java:291)
	at org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOperation(SaveableHelper.java:269)
	at org.eclipse.ui.internal.SaveableHelper.savePart(SaveableHelper.java:159)
	at org.eclipse.ui.internal.WorkbenchPage.saveSaveable(WorkbenchPage.java:3915)
	at org.eclipse.ui.internal.WorkbenchPage.saveEditor(WorkbenchPage.java:3929)
	at org.eclipse.ui.internal.handlers.SaveHandler.execute(SaveHandler.java:54)
	at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:294)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:247)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:229)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
	at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:149)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:499)
	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.executeCommand(KeyBindingDispatcher.java:286)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.press(KeyBindingDispatcher.java:507)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.processKeyEvent(KeyBindingDispatcher.java:558)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.filterKeySequenceBindings(KeyBindingDispatcher.java:378)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.access$0(KeyBindingDispatcher.java:324)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher$KeyDownFilter.handleEvent(KeyBindingDispatcher.java:86)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1574)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1387)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1412)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1397)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1424)
	at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:824)
	at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:3272)
	at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:769)
	at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2098)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:5513)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4668)
	at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
	at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:9106)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1253)
	at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
	at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2477)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3407)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1438)