EasyVR+ adafruit motor shield

Hey guyz!, I am using EasyVR and adafruit motor shield for my voice controlled wheelchair. Whenever i connect both the shields to UNO and a PC I get an error message EasyVR not detected. Please help!.. http://www.adafruit.com/products/81 https://www.sparkfun.com/products/10963

They probably share some pins.

The Adafruit Motor Shield uses many pins, but I can't find which pins are used by the EasyVR shield. Is the EasyVR using the RX and TX pins ? The same you use for the sketch upload ?

Which Arduino board are you using ?