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I’m getting a Argument Exception with the message: An item with the same key has already been added.
This happens when I use the Rollover or Cursor Chart Modifiers.
Visual Studio is unable to evaluate the exception.

System.Transactions Critical: 0 : http://msdn.microsoft.com/TraceCodes/System/ActivityTracing/2004/07/Reliability/Exception/UnhandledUnhandled exceptionUBB3.exeSystem.ArgumentException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089An item with the same key has already been added. at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
at System.Collections.Generic.Dictionary2.Insert(TKey key, TValue value, Boolean add)
at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable
1 source, Func2 keySelector, Func2 elementSelector, IEqualityComparer1 comparer)
at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable
1 source, Func2 keySelector, Func2 elementSelector)
at Abt.Controls.SciChart.BaseRenderableSeries.NearestHitResult(Point rawPoint)
at Abt.Controls.SciChart.BaseRenderableSeries.HitTest(Point rawPoint, Boolean interpolate)
at Abt.Controls.SciChart.RolloverModifier.c361550073312ad3169f1a460aa44d307(Point c9fb04a4a0826429a55d599c809a4f6e6, Boolean c3791a1b71c1577bde30b55c12b2a5583)
at Abt.Controls.SciChart.RolloverModifier.OnModifierMouseMove(ModifierMouseArgs e)
at Abt.Controls.SciChart.ModifierGroup.c07d1dcb1c7ba461bbcbf5a1dd47c58a5(IChartModifier c6b1effd112e5355cd5f051dd91cd4f67, ModifierMouseArgs cbb39038dde40bfc3fdcfa70f4bbf8778)
at (Object , IChartModifier , ModifierMouseArgs )
at A.c4839d4bc452a3cc647260fc7e1ad10c1.c6dea473323fdce89c6d7460d087afc9c(Object c2e4dcf306e5d5e570ccc0d688db6e42c, IChartModifier c2e4dcf306e5d5e570ccc0d688db6e42c, ModifierMouseArgs c2e4dcf306e5d5e570ccc0d688db6e42c)
at Abt.Controls.SciChart.ModifierGroup.c9e8960a6a8527c20ac9e46e162c72b22(Action2 c4bd4ab823835cf92d221476b6fb65a17, ModifierMouseArgs c4c23d80d4d060e409c3479ef17d6c65e)
at Abt.Controls.SciChart.ModifierGroup.OnModifierMouseMove(ModifierMouseArgs e)
at Abt.Controls.SciChart.Utility.Mouse.MouseManager.ca5839647cb861fa726b3261de72c52c0(ModifierMouseArgs cbb39038dde40bfc3fdcfa70f4bbf8778, IReceiveMouseEvents c18509698be3f9366c690e7d2b107b62c, Boolean c3791a1b71c1577bde30b55c12b2a5583)
at Abt.Controls.SciChart.Utility.Mouse.MouseManager.cf88844ca415efe316ebbc6460c4d5477.c7ca7af35639f570327394b11001b543a.c5980502f76d6e282773f80c5da0f84e7(IReceiveMouseEvents c133657388cc0f6f6615e21e129ac4b3a)
at A.c3631c672e3fc9e342ac08ff1a63d428e.cacf72b657252e3e73860afb89d70cb9f[c13c28af86f0b14202b9c7ef43b1bd11a](IEnumerable
1 c40a30a1bb6416cd164565919fdef15a9, Action1 c885aac61bc9832561b7ff07903c88d5e)
at Abt.Controls.SciChart.Utility.Mouse.MouseManager.cf88844ca415efe316ebbc6460c4d5477.c6b7aec04ebfc28e092adf0e569761d15(Object cae49ecc8585f35e8dd5ce624f7fb7ab5, MouseEventArgs c4c23d80d4d060e409c3479ef17d6c65e)
at (Object , Object , MouseEventArgs )
at A.c5acf1f2ae72fe65952cbdccf2f5089f9.c6dea473323fdce89c6d7460d087afc9c(Object c2e4dcf306e5d5e570ccc0d688db6e42c, Object c2e4dcf306e5d5e570ccc0d688db6e42c, MouseEventArgs c2e4dcf306e5d5e570ccc0d688db6e42c)
at A.cd43732d305fa7b65b611005fdcef35d8.c769264f2530d8b47196e47cbbe58cb89(MouseEventArgs cbb39038dde40bfc3fdcfa70f4bbf8778)
at A.cd43732d305fa7b65b611005fdcef35d8.cbe8969038b3b47585f72b9c703cd47da(Object c5e18ac7ef25e3e9c51dc36756b25ed1e, MouseEventArgs c4c23d80d4d060e409c3479ef17d6c65e)
at System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(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 UBB3.App.Main()</StackTrace><ExceptionString>System.ArgumentException: An item with the same key has already been added.
at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
at System.Collections.Generic.Dictionary
2.Insert(TKey key, TValue value, Boolean add)
at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 source, Func2 keySelector, Func2 elementSelector, IEqualityComparer1 comparer)
at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 source, Func2 keySelector, Func2 elementSelector)
at Abt.Controls.SciChart.BaseRenderableSeries.NearestHitResult(Point rawPoint)
at Abt.Controls.SciChart.BaseRenderableSeries.HitTest(Point rawPoint, Boolean interpolate)
at Abt.Controls.SciChart.RolloverModifier.c361550073312ad3169f1a460aa44d307(Point c9fb04a4a0826429a55d599c809a4f6e6, Boolean c3791a1b71c1577bde30b55c12b2a5583)
at Abt.Controls.SciChart.RolloverModifier.OnModifierMouseMove(ModifierMouseArgs e)
at Abt.Controls.SciChart.ModifierGroup.c07d1dcb1c7ba461bbcbf5a1dd47c58a5(IChartModifier c6b1effd112e5355cd5f051dd91cd4f67, ModifierMouseArgs cbb39038dde40bfc3fdcfa70f4bbf8778)
at (Object , IChartModifier , ModifierMouseArgs )
at A.c4839d4bc452a3cc647260fc7e1ad10c1.c6dea473323fdce89c6d7460d087afc9c(Object c2e4dcf306e5d5e570ccc0d688db6e42c, IChartModifier c2e4dcf306e5d5e570ccc0d688db6e42c, ModifierMouseArgs c2e4dcf306e5d5e570ccc0d688db6e42c)
at Abt.Controls.SciChart.ModifierGroup.c9e8960a6a8527c20ac9e46e162c72b22(Action
2 c4bd4ab823835cf92d221476b6fb65a17, ModifierMouseArgs c4c23d80d4d060e409c3479ef17d6c65e)
at Abt.Controls.SciChart.ModifierGroup.OnModifierMouseMove(ModifierMouseArgs e)
at Abt.Controls.SciChart.Utility.Mouse.MouseManager.ca5839647cb861fa726b3261de72c52c0(ModifierMouseArgs cbb39038dde40bfc3fdcfa70f4bbf8778, IReceiveMouseEvents c18509698be3f9366c690e7d2b107b62c, Boolean c3791a1b71c1577bde30b55c12b2a5583)
at Abt.Controls.SciChart.Utility.Mouse.MouseManager.cf88844ca415efe316ebbc6460c4d5477.c7ca7af35639f570327394b11001b543a.c5980502f76d6e282773f80c5da0f84e7(IReceiveMouseEvents c133657388cc0f6f6615e21e129ac4b3a)
at A.c3631c672e3fc9e342ac08ff1a63d428e.cacf72b657252e3e73860afb89d70cb9f[c13c28af86f0b14202b9c7ef43b1bd11a](IEnumerable1 c40a30a1bb6416cd164565919fdef15a9, Action1 c885aac61bc9832561b7ff07903c88d5e)
at Abt.Controls.SciChart.Utility.Mouse.MouseManager.cf88844ca415efe316ebbc6460c4d5477.c6b7aec04ebfc28e092adf0e569761d15(Object cae49ecc8585f35e8dd5ce624f7fb7ab5, MouseEventArgs c4c23d80d4d060e409c3479ef17d6c65e)
at (Object , Object , MouseEventArgs )
at A.c5acf1f2ae72fe65952cbdccf2f5089f9.c6dea473323fdce89c6d7460d087afc9c(Object c2e4dcf306e5d5e570ccc0d688db6e42c, Object c2e4dcf306e5d5e570ccc0d688db6e42c, MouseEventArgs c2e4dcf306e5d5e570ccc0d688db6e42c)
at A.cd43732d305fa7b65b611005fdcef35d8.c769264f2530d8b47196e47cbbe58cb89(MouseEventArgs cbb39038dde40bfc3fdcfa70f4bbf8778)
at A.cd43732d305fa7b65b611005fdcef35d8.cbe8969038b3b47585f72b9c703cd47da(Object c5e18ac7ef25e3e9c51dc36756b25ed1e, MouseEventArgs c4c23d80d4d060e409c3479ef17d6c65e)
at System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean&amp; handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean&amp; handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean&amp; handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(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&amp; 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 UBB3.App.Main()

Version
1.7.4880.33900
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