IR_DEMO not working?

I am having trouble getting the IR_DEMO.c to work on a RCM30/31/32XX PROTOTYPING BOARD with a RCM3100.

I follow the instructions given in the demo. Compile IR_DEMO.c, run it on one board, then move the programming cable to my second board and repeat. I hit S2 and it says package sent on STDIO but I never get a response packet from the other board. The IR sensors are pointing at each other and I use the LEDs to indicate when a packet is sent and when one is recieved. Both boards appear to be sending but neither recieve. Why is it not working? Have I missed any steps? Thanks for any help in advance.