The "Invalid operation in GDI+ (code: 2)" exception occurs when painting a map path that includes a segment formed by exactly two geographical points

Hello,

I'm trying to show a path on a TdxMapControl with an OpenStreetMap layer. I use the following code:

C#
procedure TForm2.Button1Click(Sender: TObject);  
var AItemLayer : TdxMapItemLayer;  
    APath : TdxMapPath;  
    ASegment : TdxMapPathSegment;  
    APoint : TdxMapControlGeoPointItem;  
begin  
  //dxMapControl1.Layers.BeginUpdate;  
  AItemLayer := dxMapControl1.AddItemLayer;  
  AItemLayer.ItemStyle.BorderColor := dxColorToAlphaColor(clBlue);  
  APath := TdxMapPath(AItemLayer.AddItem(TdxMapPath));  
  APath.Style.BorderColor := dxColorToAlphaColor(clBlue);  
  //APath.Segments.BeginUpdate;  
  ASegment := APath.Segments.Add;  
  //ASegment.GeoPoints.BeginUpdate;  
  APoint := ASegment.GeoPoints.Add;  
  APoint.Latitude := 52;  
  APoint.Longitude := 8;  
  APoint := ASegment.GeoPoints.Add;  
  APoint.Latitude := 51;  
  APoint.Longitude := 7;  
  //ASegment.GeoPoints.EndUpdate;  
  //APath.Segments.EndUpdate;  
  //dxMapControl1.Layers.EndUpdate;  
end;  

After pressing "Button1" nothing happens. If I try to scroll the map I get an error "Invalid operation in GDI+ (Code: 2)". It makes no difference if I uses BeginUpdate/EndUpdate. Unfortunately the documentation of the MapControl is not available, yet. So i'm not sure if the code is realy right.

If It try the same with the design time editor i get the GDI error immediately after starting the applictaion.

Best regards

Philipp