UltraGrid shows big red "X" on subsequent attempts to re-bind flat data programmatically. This is using Infragistics2.Win.UltraWinGrid.v7.3. Sometimes it occurs after the second button click. Sometimes it takes maybe 10 clicks. The faster you click, the fewer clicks it takes. I created a simple app and reproduced the problem there. I've researched this a lot (it seems I'm not the only one who has seen the "big red cross") but have run out of ideas. It could be something simple. The exceptions below appear randomly apparently. I've tried setting the UltraGrid.DataSource to null before rebinding, DataTable.Clear(), Reset(), and resetting the width / height of the Ultragrid several places at runtime. I've tried enabling all exceptions and debugging it as well. The errors appear there as well, but only at the Application.Run line in Program.cs. Any ideas?

The code that rebinds the data (it calls the controller to get the XML data):

 private void ReBindData()
 {
     DataTable dt = new DataTable("SomeDataTable");
     XmlNodeList xmlnodes = controller.getNodes();
     dt.Columns.Add("Col1");
     IEnumerator enumerator = xmlnodes.GetEnumerator();
     while (enumerator.MoveNext())
     {
  XmlNode node = (XmlNode)enumerator.Current;
  DataRow dr;
  dr = dt.NewRow();
  dr[0] = node.FirstChild.Value;
  dt.Rows.Add(dr);
     }
     ultraGrid1.DataSource = dt;
     ultraGrid1.DataBind();
 }

Exceptions:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Infragistics.Win.UIElement.DrawChildElements(UIElementDrawParams& drawParams)
   at Infragistics.Win.UIElement.DrawElement(UIElementDrawParams& defaultDrawParams)
   at Infragistics.Win.UIElement.DrawChildElements(UIElementDrawParams& drawParams)
   at Infragistics.Win.UIElement.DrawElement(UIElementDrawParams& defaultDrawParams)
   at Infragistics.Win.UIElement.DrawChildElements(UIElementDrawParams& drawParams)
   at Infragistics.Win.UIElement.DrawElement(UIElementDrawParams& defaultDrawParams)
   at Infragistics.Win.UIElement.DrawHelper(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Boolean clipText, Boolean forceDrawAsFocused, Boolean preventAlphaBlendGraphics)
   at Infragistics.Win.ControlUIElementBase.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Size elementSize, Boolean preventAlphaBlendGraphics)
   at Infragistics.Win.ControlUIElementBase.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode)
   at Infragistics.Win.UltraWinGrid.UltraGridUIElement.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode)
   at Infragistics.Win.UltraControlBase.OnPaint(PaintEventArgs pe)
   at Infragistics.Win.UltraWinGrid.UltraGrid.OnPaint(PaintEventArgs pe)
   at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
   at System.Windows.Forms.Control.WmPaint(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
   at System.Collections.ArrayList.get_Item(Int32 index)
   at Infragistics.Shared.DisposableObjectCollectionBase.GetItem(Int32 index)
   at Infragistics.Win.UltraWinGrid.VisibleRowsCollection.get_Item(Int32 index)
   at Infragistics.Win.UltraWinGrid.RowColRegionIntersectionUIElement.PositionChildElements()
   at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive)
   at Infragistics.Win.UltraWinGrid.RowColRegionIntersectionUIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive)
   at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive)
   at Infragistics.Win.UltraWinGrid.DataAreaUIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive)
   at Infragistics.Win.UIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive)
   at Infragistics.Win.UltraWinGrid.UltraGridUIElement.VerifyChildElements(ControlUIElementBase controlElement, Boolean recursive)
   at Infragistics.Win.UIElement.DrawHelper(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Boolean clipText, Boolean forceDrawAsFocused, Boolean preventAlphaBlendGraphics)
   at Infragistics.Win.ControlUIElementBase.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode, Size elementSize, Boolean preventAlphaBlendGraphics)
   at Infragistics.Win.ControlUIElementBase.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode)
   at Infragistics.Win.UltraWinGrid.UltraGridUIElement.Draw(Graphics graphics, Rectangle invalidRectangle, Boolean doubleBuffer, AlphaBlendMode alphaBlendMode)
   at Infragistics.Win.UltraControlBase.OnPaint(PaintEventArgs pe)
   at Infragistics.Win.UltraWinGrid.UltraGrid.OnPaint(PaintEventArgs pe)
   at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
   at System.Windows.Forms.Control.WmPaint(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)