Skywrite Xl - arduino gesture problems

Hi, ordered 2 standalone skywirters
the board works for few seconds then lookis like it freezes and does not print gestures
any update or help will be great.
here is code i am using -

#include <Wire.h>
#include <skywriter.h>

unsigned int max_x, max_y, max_z;
unsigned int min_x, min_y, min_z;

void setup() {
Serial.begin(9600);
Serial.println(“Hello world!”);

Skywriter.begin(12, 13);
Skywriter.onTouch(touch);
Skywriter.onAirwheel(airwheel);
Skywriter.onGesture(gesture);
Skywriter.onXYZ(xyz);
}

void loop() {
Skywriter.poll();
}

void xyz(unsigned int x, unsigned int y, unsigned int z){
if (x < min_x) min_x = x;
if (y < min_y) min_y = y;
if (z < min_z) min_z = z;
if (x > max_x) max_x = x;
if (y > max_y) max_y = y;
if (z > max_z) max_z = z;

char buf[64];
sprintf(buf, “%05u:%05u:%05u gest:%02u touch:%02u”, x, y, z, Skywriter.last_gesture, Skywriter.last_touch);
Serial.println(buf);
}

void gesture(unsigned char type){
Serial.println("Got gesture ");
Serial.print(type,DEC);
Serial.print(’\n’);
}

void touch(unsigned char type){
Serial.println("Got touch ");
Serial.print(type,DEC);
Serial.print(’\n’);
}

void airwheel(int delta){
Serial.println("Got airwheel ");
Serial.print(delta);
Serial.print(’\n’);
}

Great products !
but lack of support. I had email support weeks ago and post in this forums but
nothing yet.
what is the point of offering support if you do not care of replying back.