Unable to use XBF font on hardware with emFile file system

static void checkXBFFont(void){
  HANDLE       hFile;
  GUI_RECT     Rect;
  GUI_FONT     Font;
  GUI_XBF_DATA Data;


  // Set up a rectangle with the size of the screen for later use.
  Rect.x0 = 0;
  Rect.y0 = 0;
  Rect.x1 = LCD_GetXSize() - 1;
  Rect.y1 = LCD_GetYSize() - 1;
  //
	// Create file handle
	//
	hFile = CreateFile(FILE_PATH, GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
	if (hFile != INVALID_HANDLE_VALUE) {


	//
	// Create the font from the XBF file
	// The font and xbf data will be loaded into the two variables created above.
	// This data has to be valid during the time we use the font.
	//
	GUI_XBF_CreateFont((GUI_FONT*)&Font, &Data, GUI_XBF_TYPE_PROP_EXT, _GetData, &hFile);


    GUI_SetFont(&Font);
    GUI_SetFont(UI_PLAIN_TEXT_FONT_H1);
    GUI_SetColor(GUI_RED);
    GUI_FillRectEx(&Rect);
    GUI_SetColor(GUI_BLACK);
    GUI_DispStringInRectWrap("This text is displayed in a custom font loaded out of an XBF file.", &Rect, GUI_TA_LEFT, GUI_WRAPMODE_WORD);
    CloseHandle(hFile);
    GUI_XBF_DeleteFont(&Font);
}


   while (1) {
     GUI_Delay(100);
   }
}

static int _GetData(U32 Off, U16 NumBytes, void * pVoid, void * pBuffer) {
  FS_FILE * pFile;
  int       NumBytesRead;


  pFile = (FS_FILE *)pVoid;
  //
  // Set file pointer to the requested position
  //
  if(FS_SetFilePos(pFile, Off, FS_FILE_BEGIN)) {
    return 1; // Error
  }
  //
  // Read font data
  //
  NumBytesRead = FS_FRead(pBuffer, 1, NumBytes, pFile);


  if (NumBytesRead == 0) {
    return 1; // Error
  }
  if (NumBytesRead != NumBytes) {
    return 1; // Error
  }
  return 0;   // Ok
}


static void checkXBFFont(void){
  FS_FILE *    pFile = NULL;
  char         acVolumeName[10];
  GUI_RECT     Rect;
  static GUI_FONT     Font;
  GUI_XBF_DATA Data;


  // Set up a rectangle with the size of the screen for later use.
  Rect.x0 = 0;
  Rect.y0 = 0;
  Rect.x1 = LCD_GetXSize() - 1;
  Rect.y1 = LCD_GetYSize() - 1;
  //
  // Start emFile
  //
  //FS_Init();


  //
  // Enable long file name support
  //
  //FS_FAT_SupportLFN();
  //
  // Mount volume
  //
//   int ret = FS_GetVolumeName(0, acVolumeName, sizeof(acVolumeName));
//    debug_console_send_message("GetVolumeName successful for volume: %s\n", acVolumeName);
//   if ((ret = FS_Mount(acVolumeName)) > 0) {
//     // Open file
//     debug_console_send_message("GetVolumeName and Mount successfull for volume: %s\n", acVolumeName);
//     pFile = FS_FOpen(FILE_PATH, "rb");
//   }
//   else{
//    debug_console_send_message("Mount unsuccessfull with ret code: %d\n", ret);
//
//    debug_console_send_message("File open o peration failed - error: %d (%s)\n", ret,
//                                FS_ErrorNo2Text(ret));
//   }


  pFile = FS_FOpen(FILE_PATH, "rb");
  debug_console_send_message("Opening file: %s, can it? %s\n", FILE_PATH, (pFile == NULL) ? "No" : "Yes");
  if(pFile != NULL){
    debug_console_send_message("%s File Open Success\n", FILE_PATH);
    int res = GUI_XBF_CreateFont((GUI_FONT*)&Font, &Data, GUI_XBF_TYPE_PROP_EXT, _GetData, pFile);
    if(res == 1){
       debug_console_send_message("Font creation failed, ret=%d\n", res); 
    }
    else {
      debug_console_send_message("Font Creation success\n");
    }
    GUI_SetFont(&Font);
    GUI_SetColor(GUI_RED);
    GUI_FillRectEx(&Rect);
    GUI_SetColor(GUI_BLACK);
    GUI_DispStringInRectWrap("This text is displayed in a custom font loaded out of an XBF file.", &Rect, GUI_TA_LEFT, GUI_WRAPMODE_WORD);
    FS_FClose(pFile);
    //GUI_XBF_DeleteFont(&Font);
  }
  else{
    //debug_console_send_message("File open operation failed - error: %d (%s)\n", emfile_ret,
    //                            FS_ErrorNo2Text(emfile_ret));
  }


   while (1) {
     GUI_Delay(100);
   }
}