MSP430G2553 Serial UART - Bluetooth Module - Problem after setting BCSCTL1= CALBC1_16Mhz

Hello All,

     I am new to Microcontroller programming so please bear with me. I appreciate any help the community can provide. I'm working to put two pieces of code together. One controls an RGB led and one is the msp430g2xx3_usci_uart_9600 sample code. I can run both pieces of code independently and they work great. The problem comes in when I attempt to combine them. Apparently after I set the clock using BCSCTL1 = CALBC1_16Mhz, the uart stuff does not function. I've included the USCI UART demo I'm building from below. It works great until I add the bit about setting the clock to 16Mhz. Any help would be greatly appreciated. I know I'm missing something obvious so please go easy on me. :)  Thanks! -Corey

//******************************************************************************
// MSP430G2xx3 Demo - USCI_A0, 9600 UART Echo ISR, DCO SMCLK
//
// Description: Echo a received character, RX ISR used. Normal mode is LPM0.
// USCI_A0 RX interrupt triggers TX Echo.
// Baud rate divider with 1MHz = 1MHz/9600 = ~104.2
// ACLK = n/a, MCLK = SMCLK = CALxxx_1MHZ = 1MHz
//
// MSP430G2xx3
// -----------------
// /|\| XIN|-
// | | |
// --|RST XOUT|-
// | |
// | P1.2/UCA0TXD|------------>
// | | 9600 - 8N1
// | P1.1/UCA0RXD|<------------
//******************************************************************************
/*
* ======== Standard MSP430 includes ========
*/
#include <msp430.h>

/*
* ======== Grace related declaration ========
*/
extern void CSL_init(void);

/*
* ======== main ========
*/
int main(void)
{
CSL_init();

//Code added here...
//Set clock
BCSCTL1 = CALBC1_16MHZ; //set range
DCOCTL = CALDCO_16MHZ;//set dco step and modulation
BCSCTL3 |= LFXT1S_2; // dco
////IFG1 &= ~OFIFG; //osc fault flag
BCSCTL2 |= SELM_0; //sel DCO = mclk
//End of added code...

__bis_SR_register(LPM0_bits + GIE); // Enter LPM0, interrupts enabled
}

void USCI0RX_ISR(void)
{
while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready?
UCA0TXBUF = UCA0RXBUF; // TX -> RXed character
}