Is your transmitter and receiver still on the same frequency? What do you have it connected to? By module, I assume that you are referring to the EX/RX unit. If it is attached to an Express, do you have the remove for wireless jumper removed? How are you sending a signal to it? The fact that it appears to be flashing out the channel number that it is on with the green LED, there is a good bet that it's not the PIC. If you want to check, hook up your Pickit-? to it and attemt to read from the chip.