CCS/MSP430FR5994: Invalid CIO command when Setting Clock

#include <msp430.h>
#include "driverlib.h"
#include "gpio.h"
#include "stdio.h"
#include "string.h"

int main(void)
{

    WDT_A_hold(WDT_A_BASE);        // Stop watchdog timer 

// Configure and verify clocks.

// ********** Cannot use CS_CLOCK_DIVIDER_1 for some reason for MCLK - works in another program though ********

    printf("Configuring clocks ... \n");

    CS_setDCOFreq(CS_DCORSEL_1,CS_DCOFSEL_4);                                 // 16 MHz
    CS_initClockSignal(CS_SMCLK,CS_DCOCLK_SELECT,CS_CLOCK_DIVIDER_2);         // 8 MHz
//    CS_initClockSignal(CS_MCLK,CS_DCOCLK_SELECT,CS_CLOCK_DIVIDER_1);          // 16 MHz
    CS_initClockSignal(CS_MCLK,CS_DCOCLK_SELECT,CS_CLOCK_DIVIDER_2);          // 8 MHz

    CS_turnOnSMCLK();

    printf("Verifying clocks ... \n");

    uint32_t MCLK_Frequency;
    uint32_t SMCLK_Frequency;

    MCLK_Frequency = CS_getMCLK();
    SMCLK_Frequency = CS_getSMCLK();

    printf("MCLK_Frequency:  %ld \n",MCLK_Frequency);
    printf("SMCLK_Frequency: %ld \n",SMCLK_Frequency);


    while(1) {;}

}