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************** Exception Text **************
System.InvalidCastException: Unable to cast object of type 'DevExpress.XtraRichEdit.Model.ParagraphRun' to type 'DevExpress.XtraRichEdit.Model.TextRun'.
     DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.History.TextRunSplitHistoryItem.RedoCore() Unknown
  DevExpress.Office.v15.1.Core.dll!DevExpress.Office.History.HistoryItem.Execute() Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.PieceTable.SplitTextRun(DevExpress.XtraRichEdit.Model.ParagraphIndex paragraphIndex, DevExpress.XtraRichEdit.Model.RunIndex runIndex, int offset) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.PieceTable.ObtainAffectedRunInfo(DevExpress.XtraRichEdit.Model.DocumentLogPosition logPositionStart, int length) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.SelectionBasedOperation.Execute(DevExpress.XtraRichEdit.Model.DocumentLogPosition startLogPosition, int length, bool documentLastParagraphSelected) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.PieceTablePasteHtmlClipboardDataCommand.CopyFragment(DevExpress.XtraRichEdit.Model.DocumentModel sourceModel, DevExpress.XtraRichEdit.Model.DocumentModel targetModel, DevExpress.XtraRichEdit.Model.DocumentLogPosition startFragmentPos, DevExpress.XtraRichEdit.Model.DocumentLogPosition endFragmentPos) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.PieceTablePasteHtmlClipboardDataCommand.PopulateDocumentModelFromContentStringCore(DevExpress.XtraRichEdit.Model.DocumentModel documentModel, DevExpress.XtraRichEdit.Model.ClipboardStringContent content, string sizeCollection) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.PieceTablePasteTextContentConvertedToDocumentModelCommandBase.CreateDocumentModelFromContentString(DevExpress.XtraRichEdit.Model.ClipboardStringContent content, string sizeCollection) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.PieceTablePasteTextContentConvertedToDocumentModelCommandBase.CreateSourceDocumentModel(string sizeCollection) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.PieceTablePasteContentConvertedToDocumentModelCommandBase.ExecuteCore() Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Model.PieceTableCommand.Execute() Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.Internal.PasteContentConvertedToDocumentModelCommandBase.ModifyModel() Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.InsertObjectCommandBase.PerformModifyModel() Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.RichEditSelectionCommand.ExecuteCore() Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.RichEditMenuItemSimpleCommand.ForceExecute(DevExpress.Utils.Commands.ICommandUIState state) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.Internal.PasteSelectionCoreCommand.ExecuteCommand(DevExpress.Utils.Commands.Command command, DevExpress.Utils.Commands.ICommandUIState state) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.MultiCommand.ForceExecuteCore(DevExpress.Utils.Commands.ICommandUIState state) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.Internal.PasteSelectionCoreCommand.ForceExecuteCore(DevExpress.Utils.Commands.ICommandUIState state) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.MultiCommand.ForceExecute(DevExpress.Utils.Commands.ICommandUIState state) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.MultiCommand.ExecuteCommand(DevExpress.Utils.Commands.Command command, DevExpress.Utils.Commands.ICommandUIState state) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.MultiCommand.ForceExecuteCore(DevExpress.Utils.Commands.ICommandUIState state) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.MultiCommand.ForceExecute(DevExpress.Utils.Commands.ICommandUIState state) Unknown
  DevExpress.RichEdit.v15.1.Core.dll!DevExpress.XtraRichEdit.Commands.TransactedMultiCommand.ForceExecute(DevExpress.Utils.Commands.ICommandUIState state) Unknown
  DevExpress.Data.v15.1.dll!DevExpress.Utils.Commands.Command.Execute() Unknown
  DevExpress.Utils.v15.1.dll!DevExpress.Utils.Menu.DXMenuItemCommandAdapter<DevExpress.XtraRichEdit.Commands.RichEditCommandId>.OnClick(object sender, System.EventArgs e) Unknown
  DevExpress.XtraRichEdit.v15.1.dll!DevExpress.XtraRichEdit.Menu.RichEditMenuItemCommandWinAdapter.OnClick(object sender, System.EventArgs e) Unknown
  DevExpress.Utils.v15.1.dll!DevExpress.Utils.Menu.DXMenuItem.OnClick() Unknown