nRF24L01+ Sample works but my code doesn't

Hello guys!
I started playing with 2 Arduino nanos + nRF24L01+.
I tried the getting started example and it works fine, so i started writing my own code.
It doesn’t work and i have no idea why. when i boot the receiving arduino first and then the sending one, i can receive 2 messages from the sending one and then it stops working…
any ideas?
here is my code:

receive:

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <RF24_config.h>
#include "printf.h"

RF24 radio(9,10);

const uint64_t pipe = 0xF0F0F0F0D2LL;

void setup()
{
delay(1000);
Serial.begin(57600);
delay(1000);
printf_begin();
radio.begin();
radio.setRetries(15,15);
radio.openReadingPipe(1,pipe);
Serial.println("radio details:");

radio.printDetails();
radio.startListening();
}

void loop()
{
  if ( radio.available() )
    {
      bool done = false;
      while (!done)
      {
        float temp;
        done = radio.read(&temp, sizeof(temp));
        Serial.print(temp);
        Serial.println(" Grad Celsius");
      }
    }
  delay(100);
}

send:

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <RF24_config.h>
#include "printf.h"
#include <OneWire.h>
#include <DallasTemperature.h>

OneWire ourWire(2);
RF24 radio(9,10);

DallasTemperature sensors(&ourWire);

const uint64_t pipe = 0xF0F0F0F0D2LL;

void setup()
{
delay(1000);
Serial.begin(57600);
delay(1000);
printf_begin();
sensors.begin();
radio.begin();
radio.setRetries(15,15);
radio.openWritingPipe(pipe);

Serial.println("radio details:");

radio.printDetails();

Serial.println("Starte Temperatur abfragen ...");
}

void loop()
{
  float temp=sensors.getTempCByIndex(0);
  sensors.requestTemperatures();
  Serial.print(temp);
  Serial.println(" Grad Celsius");
  Serial.println("Now sending...");
  bool ok = radio.write(&temp, sizeof(temp));
  if (ok)
    Serial.println("ok\n\r");
  else
    Serial.println("failed\n\r");
  Serial.println("_______________________");
  delay(100);
}

I fixed this by downloading a diffrent fork of the library.