An updated version of bare_receiver.ino to work with newer versions of the RF24 library.

bare_receiver.ino

#include <SPI.h>
#include "nRF24L01.h"
#include "RF24.h"

class RF24Test: public RF24
{
public: RF24Test(int a, int b): RF24(a,b) {}
};

RF24Test radio(9,10);

// Radio pipe addresses for the 2 nodes to communicate.
const uint64_t pipes[2] = { 0xF0F0F0F0E1LL, 0xF0F0F0F0D2LL };

void setup()
{
  Serial.begin(57600);
  
  radio.begin();
  
  radio.openWritingPipe(pipes[1]);
  radio.openReadingPipe(1,pipes[0]);
  
  radio.startListening();
  Serial.println("Listening...");
}

void loop()
{
    // if there is data ready
    if ( radio.available() )
     {
      byte transmission[7];
//      bool done = false;     // No longer using this bool since radio.read returns void
//      while (!done)
//      {
        // Fetch the payload, and see if this was the last one.
//        done = radio.read( &transmission, 7 );
        radio.read( &transmission, sizeof(transmission) );     // radio.read returns void.

        // Spew it
        Serial.print(transmission[0]);
        Serial.print(" ");
        Serial.print(transmission[1]);
        Serial.print(" ");
        Serial.print(transmission[2]);
        Serial.print(" ");
        Serial.print(transmission[3]);
        Serial.print(" ");
        Serial.print(transmission[4]);
        Serial.print(" ");
        Serial.print(transmission[5]);
        Serial.print(" ");
        Serial.print(transmission[6]);
        Serial.print("   ");

   // Delay just a little bit to let the other unit
   // make the transition to receiver
   delay(20);
//      }

      // First, stop listening so we can talk
      radio.stopListening();

      // Send the final one back.
      byte response = B0;
      radio.write( &response, sizeof(response) );
      Serial.println("Sent response.\n\r");

      // Now, resume listening so we catch the next packets.
      radio.startListening();

    }  
}