CSL ATA Filesystem consecutive file writes fail

Hi,

I'm using the CSL example csl_mmcsd_atafs_example.c (for CCS V4.X) in order to write a file to an SD/MMC.

Adding another consecutive  ATA_write() call after the existing one corrupts the file system and doesn't allow access to this file from an external card reader.

It created a bigger file, but it is unreadable. Extra write call - where it says "My addition":

/* Find the first file available */
    ata_error =  ATA_fileInit(gpstrAtaDrive, pAtaFile);
    if(ata_error) {
        //printf("ATA_fileInit error (0x%x)\n", ata_error);
        return(ata_error);
    }

    /* Set the temp write buffer */
    pAtaFile->pDrive->_AtaWriteBuffer = AtaWrBuf;

    /* Set the file name */
    ATA_setFileName(pAtaFile, fileName, "txt");

    ata_error = ATA_create(pAtaFile);
    if(ata_error != ATA_ERROR_NONE)
    {
        printf("ATA_create Failed\n");
        return(ata_error);
    }
    else
    {
        printf("\nFile Creation on SD card is Successful\n");
    }

        /* Write data to the file */
        ata_error = ATA_write(pAtaFile, gMmcWriteBuf, CSL_MMCSD_ATA_BUF_SIZE);

      /**** My addition ****/    

       ata_error = ATA_write(pAtaFile, gMmcWriteBuf, CSL_MMCSD_ATA_BUF_SIZE);

    if(ata_error != ATA_ERROR_NONE)
    {
        printf("ATA_write Failed\n");
        return(ata_error);
    }
    else
    {
        printf("\nWriting Data to the file on SD card successful\n");
    }

    /* Reset the file pointer to the beginning */
    ATA_seek (pAtaFile, 0);

    /* Read the data from the file in little endian mode */
    ata_error = ATA_readLittleEndian(pAtaFile,gMmcReadBuf, CSL_MMCSD_ATA_BUF_SIZE);
    if(ata_error != ATA_ERROR_NONE)
    {
        printf("ATA_readLittleEndian Failed\n");
        return(ata_error);
    }
    else
    {
        printf("\nReading Data from the file on SD card successful\n");
    }

    /* Close the file */
    ata_error = ATA_close(pAtaFile); 

Any ideas as to why that would happen, or should any other ATA FS function be called between those writes?

Thanks,

Shahar