Exception thrown when letting the IDE open and idle in a Ceylon project for a while and then opening a Java project in the same window

[dcominottim]

om.intellij.util.IncorrectOperationException: Sorry but parent: Project (Disposed) ceylon has already been disposed (see the cause for stacktrace) so the child: null 641531727: running=false; canceled=false will never be disposed
java.lang.RuntimeException: com.intellij.util.IncorrectOperationException: Sorry but parent: Project (Disposed) ceylon has already been disposed (see the cause for stacktrace) so the child: null 641531727: running=false; canceled=false will never be disposed
	at com.intellij.openapi.application.impl.LaterInvocator.invokeAndWait(LaterInvocator.java:188)
	at com.intellij.openapi.application.impl.ApplicationImpl.invokeAndWait(ApplicationImpl.java:680)
	at org.intellij.plugins.ceylon.ide.model.CeylonModelManager.runModelUpdate$priv$(CeylonModelManager.ceylon:373)
	at org.intellij.plugins.ceylon.ide.model.CeylonModelManager.access$900(CeylonModelManager.ceylon:191)
	at org.intellij.plugins.ceylon.ide.model.CeylonModelManager$8.$call$(CeylonModelManager.ceylon:524)
	at org.intellij.plugins.ceylon.ide.model.CeylonModelManager$8.run(CeylonModelManager.ceylon:402)
	at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:223)
	at com.intellij.util.Alarm$Request.runSafely(Alarm.java:418)
	at com.intellij.util.Alarm$Request.access$700(Alarm.java:343)
	at com.intellij.util.Alarm$Request$1.run(Alarm.java:385)
	at com.intellij.util.Alarm$Request.run(Alarm.java:396)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at com.intellij.util.concurrency.SchedulingWrapper$MyScheduledFutureTask.run(SchedulingWrapper.java:237)
	at com.intellij.util.concurrency.BoundedTaskExecutor$2.run(BoundedTaskExecutor.java:212)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: com.intellij.util.IncorrectOperationException: Sorry but parent: Project (Disposed) ceylon has already been disposed (see the cause for stacktrace) so the child: null 641531727: running=false; canceled=false will never be disposed
	at com.intellij.openapi.util.objectTree.ObjectTree.register(ObjectTree.java:66)
	at com.intellij.openapi.util.Disposer.register(Disposer.java:95)
	at com.intellij.openapi.util.Disposer.register(Disposer.java:91)
	at com.intellij.openapi.progress.util.ProgressWindow.<init>(ProgressWindow.java:123)
	at com.intellij.openapi.progress.util.ProgressWindow.<init>(ProgressWindow.java:82)
	at com.intellij.openapi.progress.impl.BackgroundableProcessIndicator.<init>(BackgroundableProcessIndicator.java:71)
	at com.intellij.openapi.progress.impl.BackgroundableProcessIndicator.<init>(BackgroundableProcessIndicator.java:52)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcessWithProgressAsynchronously(ProgressManagerImpl.java:111)
	at com.intellij.openapi.progress.impl.CoreProgressManager.b(CoreProgressManager.java:347)
	at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:349)
	at com.intellij.openapi.progress.impl.CoreProgressManager.run(CoreProgressManager.java:331)
	at org.intellij.plugins.ceylon.ide.model.CeylonModelManager$6.$call$(CeylonModelManager.ceylon:374)
	at org.intellij.plugins.ceylon.ide.model.CeylonModelManager$6.run(CeylonModelManager.ceylon:374)
	at com.intellij.openapi.application.impl.LaterInvocator$1.run(LaterInvocator.java:165)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.a(LaterInvocator.java:410)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:399)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:762)
	at java.awt.EventQueue.access$500(EventQueue.java:98)
	at java.awt.EventQueue$3.run(EventQueue.java:715)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:732)
	at com.intellij.ide.IdeEventQueue.i(IdeEventQueue.java:827)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:655)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:365)
	at com.intellij.ide.IdeEventQueue.pumpEventsForHierarchy(IdeEventQueue.java:923)
	at com.intellij.openapi.progress.util.ProgressWindow.startBlocking(ProgressWindow.java:199)
	at com.intellij.openapi.progress.util.ProgressWindow.startBlocking(ProgressWindow.java:186)
	at com.intellij.openapi.application.impl.ApplicationImpl.runProcessWithProgressSynchronously(ApplicationImpl.java:608)
	at com.intellij.openapi.progress.impl.CoreProgressManager.runProcessWithProgressSynchronously(CoreProgressManager.java:422)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcessWithProgressSynchronously(ProgressManagerImpl.java:89)
	at com.intellij.openapi.progress.impl.CoreProgressManager.b(CoreProgressManager.java:337)
	at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:339)
	at com.intellij.openapi.progress.impl.CoreProgressManager.run(CoreProgressManager.java:323)
	at com.intellij.openapi.progress.ProgressManager.run(ProgressManager.java:190)
	at com.intellij.openapi.project.impl.ProjectManagerImpl.loadAndOpenProject(ProjectManagerImpl.java:437)
	at com.intellij.ide.impl.ProjectUtil.openProject(ProjectUtil.java:190)
	at com.intellij.ide.impl.ProjectUtil.openOrImport(ProjectUtil.java:116)
	at com.intellij.ide.actions.OpenFileAction.a(OpenFileAction.java:93)
	at com.intellij.ide.actions.OpenFileAction.a(OpenFileAction.java:68)
	at com.intellij.openapi.fileChooser.ex.FileChooserDialogImpl.choose(FileChooserDialogImpl.java:160)
	at com.intellij.openapi.fileChooser.FileChooser.chooseFiles(FileChooser.java:114)
	at com.intellij.openapi.fileChooser.FileChooser.chooseFiles(FileChooser.java:91)
	at com.intellij.ide.actions.OpenFileAction.actionPerformed(OpenFileAction.java:60)
	at com.intellij.openapi.actionSystem.ex.ActionUtil$1.run(ActionUtil.java:215)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:232)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.a(ActionMenuItem.java:309)
	at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:929)
	at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:136)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:299)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem.a(ActionMenuItem.java:116)
	at com.intellij.openapi.application.TransactionGuardImpl.a(TransactionGuardImpl.java:86)
	at com.intellij.openapi.application.TransactionGuardImpl.a(TransactionGuardImpl.java:109)
	at com.intellij.openapi.application.TransactionGuardImpl.submitTransaction(TransactionGuardImpl.java:118)
	at com.intellij.openapi.application.TransactionGuard.submitTransaction(TransactionGuard.java:122)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:116)
	at com.intellij.ui.plaf.beg.BegMenuItemUI.a(BegMenuItemUI.java:513)
	at com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI.java:45)
	at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:533)
	at java.awt.Component.processMouseEvent(Component.java:6541)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
	at java.awt.Component.processEvent(Component.java:6306)
	at java.awt.Container.processEvent(Container.java:2236)
	at java.awt.Component.dispatchEventImpl(Component.java:4897)
	at java.awt.Container.dispatchEventImpl(Container.java:2294)
	at java.awt.Component.dispatchEvent(Component.java:4719)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
	at java.awt.Container.dispatchEventImpl(Container.java:2280)
	at java.awt.Window.dispatchEventImpl(Window.java:2746)
	at java.awt.Component.dispatchEvent(Component.java:4719)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:764)
	at java.awt.EventQueue.access$500(EventQueue.java:98)
	at java.awt.EventQueue$3.run(EventQueue.java:715)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
	at java.awt.EventQueue$4.run(EventQueue.java:737)
	at java.awt.EventQueue$4.run(EventQueue.java:735)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:734)
	at com.intellij.ide.IdeEventQueue.i(IdeEventQueue.java:827)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:651)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:365)
	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)