Atmel QTouch Library Initialisation at run-time causing problem.

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/***************************************************************************//**
* @function  touch_sensors_init
* @brief  - Purpose: Example application entry function, for the PTC initialization
* @notes The function will test based on the periodicity set.
The periodicity is a multiple of the measurement time of the PTC set by the user
*//***************************************************************************/
touch_ret_t touch_sensors_init(void)
{
    touch_ret_t touch_ret = TOUCH_SUCCESS;
  fmea_error = 0;
  non_fmea_error = 0;
 
  touch_lib_di_data_block_t touch_lib_selfcap_di_data_block;
  touch_lib_di_data_block_t *p_selfcap_inv_dblk;
  touch_lib_selfcap_di_data_block.p_di_data_block = selfcap_inv_data_blk;
  p_selfcap_inv_dblk = &touch_lib_selfcap_di_data_block;
    /* Setup and enable generic clock source for PTC module. */
    touch_configure_ptc_clock();
 
    touch_time.measurement_period_ms = DEF_TOUCH_MEASUREMENT_PERIOD_MS;
    touch_userconfig.sync_measure_n_test = 0;
    touch_userconfig.fmea_time_count = SAFETY_FMEA_TIME_PERIOD_MSEC;
    touch_error_app_cb = touch_lib_error_callback;
    /* Initialize touch library for Self Cap operation. */
    touch_ret = touch_selfcap_sensors_init(&touch_config);
    sf_touchlib_status_di_check(touch_ret);
    if (touch_ret != TOUCH_SUCCESS) 
  {
        SAFETY_TOUCH_FAULT_ACTION(ERR_TCH_INIT, 0);
    }
 
    touch_ret = touch_selfcap_di_init(p_selfcap_inv_dblk);
    sf_touchlib_status_di_check(touch_ret);
 
    if (touch_ret != TOUCH_SUCCESS) 
  {
        SAFETY_TOUCH_FAULT_ACTION(ERR_TCH_DI_INIT, 0);
    }
 
#if DEF_TOUCH_QDEBUG_ENABLE == 1
    QDebug_Init();
#endif
 
    /* configure the touch library sensors. */
    touch_ret = touch_sensors_config();
    sf_touchlib_status_di_check(touch_ret);
    if (touch_ret != TOUCH_SUCCESS) 
  {
        SAFETY_TOUCH_FAULT_ACTION(ERR_TCH_SENSOR_CONFIG, 0);
    }
 
    /* Auto Tuning setting for calibration.
     *
     * AUTO_TUNE_PRSC: When Auto tuning of pre-scaler is selected
     * the PTC uses the user defined internal series resistor setting
     * (DEF_SELFCAP_SENSE_RESISTOR) and the pre-scaler is adjusted
     * to slow down the PTC operation to ensure full charge transfer.
     *
     * AUTO_TUNE_RSEL: When Auto tuning of the series resistor is
     * selected the PTC runs at user defined pre-scaler setting speed
     * (DEF_SELFCAP_CLK_PRESCALE) and the internal series resistor is
     * tuned automatically to the optimum value to allow for full
     * charge transfer.
     *
     * AUTO_TUNE_NONE: When manual tuning option is selected
     *(AUTO_TUNE_NONE),
     * the user defined values of PTC pre-scaler and series resistor is used
     * for PTC operation as given in DEF_SELFCAP_CLK_PRESCALE and
     * DEF_SELFCAP_SENSE_RESISTOR
     *
     */
    touch_ret = touch_selfcap_sensors_calibrate(0);
    sf_touchlib_status_di_check(touch_ret);
    if (touch_ret != TOUCH_SUCCESS) 
  {
    SAFETY_TOUCH_FAULT_ACTION(ERR_TCH_CALIB, 0);
    }
     /* Call data integrity function after every config_data change */
    touch_calc_selfcap_config_data_integrity();
 
#if (DEF_TOUCH_FMEA_TEST == 1)
     app_selfcap_fmea_init();
#endif
    return (touch_ret);
}