SDuFAT Library don't allow save more than 16 results

I buy a micro SD card from http://www.cooking-hacks.com/index.php/shop/arduino/microsd-2gb-module-for-arduino.html and I tried to save more than 16 results but I can't.

The code for my microSD card is in http://blushingboy.net/p/SDuFAT

Can someone help me