Processing and Spout

I have been involved in programing since a lo of time, but I am new in the Processing/Spout area. Which code is necessary in Processing to send an image to Spout?

For the moment I use :

Spout spout;

void setup() {
...
     spout = new Spout();
     spout.initSender("Spout Processing", width, height);
...
}

void draw() {
...
      spout.sendTexture();
...
}

But the system hangs randomly after a variable amount of time. I am using Windows 7 on the PC and generated an application full screen 64 bits.

Thanks if somebody can help me?