Could not find JSON converter for type NativeUint

Hi. I am using a service to transmit a stream to the server. The "Sum" function is executed correctly, but the SendImg function returns the error:
Could not find JSON converter for type "NativeUint".
Can someone tell me I'm doing wrong? The TStream type is permitted according to the documentation:
http://www.tmssoftware.biz/business/xdata/doc/web/supported_types.html

Server code:

unit ServerApi;
interface
uses RemoteDB.Drivers.Interfaces
   , Sparkle.HttpSys.Server
   , XData.Service.Common
   , IServiceImage
   , Classes
   ;
const
  cServerApi  = 'http://+:2001/mksoft/api/';
type
  [ServiceImplementation]
  TMkServiceImage = class (TInterfacedObject, IMkServiceImage)
    procedure SendImage (AStream: TStream);
    function Suma (a,b:integer): integer;
  end;
function StartServerApi (AConnection: IDBConnection) : THttpSysServer;
implementation
uses XData.Server.Module
   , XData.Aurelius.Model
   , FW.Log
   ;
{ TMkServiceImage }
procedure TMkServiceImage.SendImage(AStream: TStream);
begin
   Log.LogMessage('Stream %d',[Astream.Size]);
end;
function TMkServiceImage.Suma(a, b: integer): integer;
begin
  Result := a + b;
end;
function StartServerApi (AConnection: IDBConnection) : THttpSysServer;
var
  Module: TXDataServerModule;
begin
  Result := THttpSysServer.Create;
  Module := TXDataServerModule.Create(cServerApi,AConnection,TXDataAureliusModel.Get('mkimage'));
  Result.AddModule(Module);
  Result.Start;
end;
initialization
  RegisterServiceType(TMkServiceImage);
end.

Client Code:

procedure TFSetTDci.SendImage(Sender: TObject);
var
  lClient: TXDataClient;
  lService: IMkServiceImage;
  lStream: TStream;
  i: integer;
begin
//  Login;
  lClient := TXDataClient.Create (TXDataAureliusModel.Get('mkimage'));
  lClient.Uri := 'http://localhost:2001/mksoft/api';
  lService := lClient.Service <IMkServiceImage>;
  i := lService.Suma(5,8);
  Log.LogMessage('Suma %d',); // 13!!! OK
  lStream := TFileStream.Create (pFichero,fmOpenRead);
  try
    lService.SendImage(lStream);
  finally
    lStream.Free;
  end;
end;

We sent you an e-mail with a patch that fixes this problem. The fix will be included in next release of TMS XData.