procedure TForm1.SpeedButton1Click(Sender: TObject);
var
  MS: TMemoryStream;
begin
  DM_REP.odsTemplates.Open;
  DM_REP.odsStandartni.Open;

  MS := TMemoryStream.Create;
  try
    DM_REP.odsTemplates.Locate('FILE_NAME', 'Standartni_.prt', [loCaseInsensitive]);
    DM_REP.odsTemplatesFILE_DATA.SaveToStream(MS);
    DM_REP.prStandartni_.LoadTemplate(MS, false);
  finally MS.Free; end;

  //DM_REP.prStandartni_.LoadTemplateFromFile('Templates\Standartni_.prt', false);

  DM_REP.prStandartni_.PrepareReport;
  if DM_REP.prStandartni_.ReportPrepared then
    DM_REP.prStandartni_.PreviewPreparedReport(false);
  DM_REP.odsStandartni.Close;
  DM_REP.odsTemplates.Close;
end;