Whenever I set the value of a LinearGaugeBarMarker object in a XamLinearGauge control, an ArgumentException is thrown from deep in the WPF stack.  The exception info is copied below.

I'm using build 11.1.20111.2113 of the WPF data viz controls on win7 ultimate with themes enabled.  Sample project that reproduces the behavior is attached.

I've tried this using databinding and manual value assignment.  Doesn't seem to matter.

Exception info:

System.ArgumentException was unhandled
  Message=Value does not fall within the expected range.
  Source=mscorlib
  StackTrace:
       at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
       at MS.Internal.Automation.UiaCoreProviderApi.CheckError(Int32 hr)
       at System.Windows.Automation.Provider.AutomationInteropProvider.RaiseAutomationPropertyChangedEvent(IRawElementProviderSimple element, AutomationPropertyChangedEventArgs e)
       at System.Windows.Automation.Peers.AutomationPeer.RaisePropertyChangedEvent(AutomationProperty property, Object oldValue, Object newValue)
       at Infragistics.Controls.Charts.AutomationPeers.LinearGaugeBarMarkerAutomationPeer.RaiseValueChangedEvent(Double newValue)
       at Infragistics.Controls.Charts.AutomationPeers.LinearGaugeBarMarkerAutomationPeer.Measure_ValueChanged(Object sender, ValueChangedEventArgs e)
       at Infragistics.Controls.Charts.GaugeBarMarkerBase.OnValueChanged()
       at Infragistics.Controls.Charts.GaugeBarMarkerBase.OnValueChanged(Double oldValue, Double newValue)
       at Infragistics.Controls.Charts.GaugeBarMarkerBase.OnValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
       at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
       at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
       at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
       at Infragistics.Controls.Charts.GaugeBarMarkerBase.set_Value(Double value)
       at WpfApplication1.MainWindow.SetBarValue() in C:\Users\beefarino\Documents\Project\SeeShell\CodeOwls.SeeShell\WpfApplication1\MainWindow.xaml.cs:line 52
       at WpfApplication1.MainWindow.timer_Elapsed(Object sender, EventArgs eventArgs) in C:\Users\beefarino\Documents\Project\SeeShell\CodeOwls.SeeShell\WpfApplication1\MainWindow.xaml.cs:line 46
       at System.Windows.Threading.DispatcherTimer.FireTick(Object unused)
       at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
       at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, 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, Boolean ignoreSyncCtx)
       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, Int32 numArgs)
       at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
       at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
       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.Application.RunDispatcher(Object ignore)
       at System.Windows.Application.RunInternal(Window window)
       at System.Windows.Application.Run(Window window)
       at System.Windows.Application.Run()
       at WpfApplication1.App.Main() in C:\Users\beefarino\Documents\Project\SeeShell\CodeOwls.SeeShell\WpfApplication1\obj\x86\Debug\App.g.cs:line 0
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: