4.0b Crash when auto-upgrading from 4.0a

I'm using 4.0a and have set the update channel to beta. I was prompted for an update and chose to install. After the download finished, 4.0a promptly crashed. Here's the log:

2010-01-06 17:18:03.1840    1    Info    MainWindow    OnClosing canceled; calling Exit soon.
2010-01-06 17:18:03.3080    1    Info    OurApp    AppModel is exiting.
2010-01-06 17:18:03.3080    1    Info    BitmapSourceUtility    CreateApplicationScreenshot called for size (300,225)
2010-01-06 17:18:03.3280    1    Info    BitmapSourceUtility    Drawing window content into context at (0,20,1680,1000)
2010-01-06 17:18:03.3280    1    Info    BitmapSourceUtility    Rendering bitmap of width 300 and height 178, content bounds (0,20,1680,1000), scale 0.178571428571429
2010-01-06 17:18:03.6810    1    Info    LDLS4.AppModel    Closing 0 floating window models.
2010-01-06 17:18:03.6810    1    Info    LDLS4.AppModel    Closing main window model.
2010-01-06 17:18:03.7010    1    Info    OurApp    MainWindow changed to null, so shutting down soon.
2010-01-06 17:18:03.7010    1    Info    OurApp    Shutting down application.
2010-01-06 17:18:03.7010    1    Info    OurApp    Shutting down application.
2010-01-06 17:18:03.7010    1    Info    OurApp    Shutting down application.
2010-01-06 17:18:03.7010    1    Info    OurApp    Shutting down application.
2010-01-06 17:18:03.7010    1    Info    MainWindow    OnClosing not canceled; detaching from model.
2010-01-06 17:18:03.7010    1    Info    OurApp    OnExit exit code: 0
2010-01-06 17:18:03.7130    1    Info    LDLS4.AppModel    Disposing ExplainModel.
2010-01-06 17:18:03.7130    1    Info    LDLS4.AppModel    Disposing PanelSource.
2010-01-06 17:18:03.7130    1    Info    LDLS4.AppModel    Disposing DigitalLibraryServices.
2010-01-06 17:18:03.9871    1    Error    OurApp    Unhandled exception: System.InvalidOperationException: Invoke or BeginInvoke cannot be called on a control until the window handle has been created.
   at System.Windows.Forms.Control.WaitForWaitHandle(WaitHandle waitHandle)
   at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous)
   at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args)
   at System.Windows.Forms.Control.Invoke(Delegate method)
   at Libronix.Utility.Windows.GlobalHotKeys.Dispose()
   at Libronix.Utility.DisposableUtility.Dispose[T](T& obj)
   at LDLS4.GlobalHotKeysManager.Dispose()
   at Libronix.Utility.DisposableUtility.Dispose[T](T& obj)
   at LDLS4.AppModel.Dispose()
   at LDLS4.OurApp.OnExit(ExitEventArgs e)
   at System.Windows.Application.DoShutdown()
   at System.Windows.Application.ShutdownImpl()
   at System.Windows.Application.ShutdownCallback(Object arg)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
   at System.Windows.Threading.DispatcherOperation.InvokeImpl()
   at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Threading.DispatcherOperation.Invoke()
   at System.Windows.Threading.Dispatcher.ProcessQueue()
   at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.Run()
   at System.Windows.Application.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at System.Windows.Application.Run(Window window)
   at System.Windows.Application.Run()
   at LDLS4.OurApp.InitializeAndRun(ReadOnlyCollection`1 listArgs, SingleInstanceManager sim)
   at LDLS4.OurApp.Main(String[] astrArgs)