I cannot make a mockup, the only thing I have is a stacktrace for you.
Keyoti4.RapidSpell.WPF.dll!Keyoti.RapidSpell.Wpf.RapidSpellGUIPresenter.p() + 0x6f bytes
Keyoti4.RapidSpell.WPF.dll!Keyoti.RapidSpell.Wpf.RapidSpellGUIPresenter.Remove() + 0xcb bytes
Keyoti4.RapidSpell.WPF.dll!Keyoti.RapidSpell.Wpf.RapidSpellDialog.Check() + 0x1352 bytes
Keyoti4.RapidSpell.WPF.dll!Keyoti.RapidSpell.Wpf.RapidSpellDialog.RSListenerEnd(object A_0, Keyoti.RapidSpell.Wpf.Event.SpellCheckEventArgs A_1) + 0x1a2 bytes
Keyoti4.RapidSpell.WPF.dll!Keyoti.RapidSpell.Wpf.RapidSpellDialog.Check() + 0x13b8 bytes
> ChipSoft.Ezis.Ddr.dll!ChipSoft.Ezis.Ddr.SpellCheck.SpellCheckDialogCommand.SpellCheckDialogCommandExecute(object parameter) Line 111 + 0xe bytes C#
ChipSoft.Core.Presentation.dll!ChipSoft.Core.Presentation.RelayCommand.Execute(object parameter) Line 105 + 0x11 bytes C#
ChipSoft.Core.Presentation.dll!ChipSoft.Core.Presentation.ViewCommand.ExecuteRelayUICommand(object parameter) Line 205 + 0x19 bytes C#
ChipSoft.Core.Presentation.dll!ChipSoft.Core.Presentation.ViewCommand.System.Windows.Input.ICommand.Execute(object parameter) Line 200 + 0x11 bytes C#
PresentationFramework.dll!MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(System.Windows.Input.ICommandSource commandSource, bool userInitiated) + 0xb4 bytes
PresentationFramework.dll!System.Windows.Controls.Primitives.ButtonBase.OnClick() + 0x54 bytes
PresentationFramework.dll!System.Windows.Controls.Button.OnClick() + 0x4d bytes
PresentationFramework.dll!System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(System.Windows.Input.MouseButtonEventArgs e) + 0x9e bytes
PresentationCore.dll!System.Windows.UIElement.OnMouseLeftButtonUpThunk(object sender, System.Windows.Input.MouseButtonEventArgs e) + 0x6c bytes
PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget) + 0x31 bytes
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target) + 0x29 bytes
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs) + 0x3e bytes
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised) + 0xbe bytes
PresentationCore.dll!System.Windows.UIElement.ReRaiseEventAs(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args, System.Windows.RoutedEvent newEvent) + 0x114 bytes
PresentationCore.dll!System.Windows.UIElement.OnMouseUpThunk(object sender, System.Windows.Input.MouseButtonEventArgs e) + 0xc5 bytes
PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget) + 0x31 bytes
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target) + 0x29 bytes
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs) + 0x3e bytes
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised) + 0xbe bytes
PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args) + 0x79 bytes
PresentationCore.dll!System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs args) + 0x41 bytes
PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args, bool trusted) + 0x2c bytes
PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea() + 0x1ff bytes
PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input) + 0x45 bytes
PresentationCore.dll!System.Windows.Input.InputProviderSite.ReportInput(System.Windows.Input.InputReport inputReport) + 0x62 bytes
PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.ReportInput(System.IntPtr hwnd, System.Windows.Input.InputMode mode, int timestamp, System.Windows.Input.RawMouseActions actions, int x, int y, int wheel) + 0x2c2 bytes
PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.FilterMessage(System.IntPtr hwnd, MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) + 0x67d bytes
PresentationCore.dll!System.Windows.Interop.HwndSource.InputFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) + 0x75 bytes
WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) + 0xbe bytes
WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) + 0x7d bytes
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) + 0x53 bytes
WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source, System.Delegate method, object args, int numArgs, System.Delegate catchHandler) + 0x42 bytes
WindowsBase.dll!System.Windows.Threading.Dispatcher.InvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) + 0xb4 bytes
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) + 0x104 bytes
[Native to Managed Transition]
[Managed to Native Transition]
WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame) + 0xc1 bytes
WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame frame) + 0x49 bytes
PresentationFramework.dll!System.Windows.Application.RunDispatcher(object ignore) + 0x5b bytes
PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window) + 0x74 bytes
PresentationFramework.dll!System.Windows.Application.Run(System.Windows.Window window) + 0x2b bytes
PresentationFramework.dll!System.Windows.Application.Run() + 0x1b bytes
QuickEzis.exe!QuickEzis.App.Main() + 0x5e bytes