GSM + EasyVR shields Problem

Hello everyone..

I have an arduino uno and GSM/GPRS/GPS shield I got from dfrobot SIM908 Arduino GPS/GPRS/GSM Shield - DFRobot and it is working fine .. and I also have an easyvr shield and also working fine .. but when I stack them all together only one of them works.. There is no conflict in pins but it is not working.. any idea what is the problem :~??

Then there is a conflict in the code. Post it with code tags.

No need to ask the same question in different sections of the forum. This will lead to you getting a ban.

http://forum.arduino.cc/index.php?topic=180943.msg1341068#msg1341068