Problem with mbColorLib

[WojTec]

I'm trying make simple visual RGB selector (with trackbars only). For this I'm using mbColorLib. This is what I have:

Delphi-Quellcode:

procedure TForm2.BColorPicker1Change(Sender: TObject);
begin
  if FUpdate then Exit;

  FUpdate := True;
  try
    RColorPicker1.Blue := BColorPicker1.Blue;
    GColorPicker1.Blue := BColorPicker1.Blue;

    mbColorPreview1.Color := BColorPicker1.SelectedColor;
  finally
    FUpdate := False;
  end;
end;

procedure TForm2.GColorPicker1Change(Sender: TObject);
begin
  if FUpdate then Exit;

  FUpdate := True;
  try
    RColorPicker1.Green := GColorPicker1.Green;
    BColorPicker1.Green := GColorPicker1.Green;

    mbColorPreview1.Color := GColorPicker1.SelectedColor;
  finally
    FUpdate := False;
  end;
end;

procedure TForm2.RColorPicker1Change(Sender: TObject);
begin
  if FUpdate then Exit;

  FUpdate := True;
  try
    GColorPicker1.Red := RColorPicker1.Red;
    BColorPicker1.Red := RColorPicker1.Red;

    mbColorPreview1.Color := RColorPicker1.SelectedColor;
  finally
    FUpdate := False;
  end;
end;

Just simple assigning values, but after F9 raises AV. Could you try it in your mbColorLib, please?