Note re. JeeLib and the RFM69CW 

If you are using the newer RFM69CW radio module, be sure to change the sketch to suit.
A little way below the initial block of comments, find the 2 lines:

#define RF69_COMPAT 0 // for the RFM12B
// #define RF69_COMPAT 1 // for the RF69

Comment out the first line and un-comment the second, so that it reads:

// #define RF69_COMPAT 0 // for the RFM12B
#define RF69_COMPAT 1 // for the RF69