Do you, at least, get these lines on your monitor ?
"Starting Poor Man's Wireless 2.4GHz Scanner ..." and
"> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 <"
If not, check the baud-rate you're using, it should be 57600 baud.
The wiring of the pins did cause some problems over here by the way.
I don't remember whether it was this scanner-sketch or another, every
channel checked showed intensive transmissions while only a few people in my
neighbourhood use WIFI.
Some of the sketches of different nRF24L01-programmers also use
different arduino-pins for the signals CE and SS, you may have to adjust those
on your arduino or in the sketches used.