Anyone know how to use BASIC stamp program, BOE or eb500?

Hi, I am currently doing a school project which involve the use of an
eb500, sound module and BASIC stamp II attached to a BOE.
We are using it to communicate with the handphone. Initially,the phone
could detect the eb500 and the eb500 LED light up.
However, after we connected the sound module, the eb500 could not
detect the phone.We suspect something is wrong with the eb500 but we
can't conclude that. Below is our program:
This program demonstrates how to get the address of the eb500 serial
' Bluetooth module.
'
' Instructions
' ============
' 1. Verify that the eb500 module is connected properly to the AppMod
'    header of the developent board.
' 2. Modify the connection logic to use the correct Bluetooth Address.
' 3. Compile and run this program.
'
'
**************************************************************************

'{$STAMP BS2}
'Wait for the eb500 radio to be ready
PAUSE 1000

'Connect to the remote device
SEROUT 1,84,["con 00:0C:84:00:05:29",CR]
SERIN 0,84,[WAIT("ACK",CR)]

'Wait for the connection to be established and switch to data mode
WaitForConnection:
IF IN5 = 0 THEN WaitForConnection
HIGH 6
PAUSE 300

'Wait for 20 seconds
PAUSE 20000

'Switch to Command Mode
LOW 6
SERIN 0,84,[WAIT(CR,">")]

'Disconnect from the remote device
SEROUT 1,84,["dis",CR]
SERIN 0,84,[WAIT(CR,">")]

May I know what may be the possible causes for failure? A million
thanks!!
Best regards,
Elizabeth