APC220 wireless can't communicate at 19200 bauds

The link for shields I'm using:

http://www.robotshop.com/content/PDF/dfrobot-arduino-shields-manual.pdf

(The first shield, as you can see is prepared for the Apc220)

The link for apc220:

http://www.yerobot.com/products/manual/APC220%20Mannual.pdf

The relevant code is as easy as:

void setup(){

Serial.begin(19200);

}

void loop(){

Serial.println("5");

}

At 9600 runs good, but 19200 no way... maybe old version of apc220?

thanks