error moto xt1528 unlock error help

while trying to unlock moto xt1528 verzion unlock getting error like this



plz help me


SigmaKey 2.29.13b1 Qcom: Direct unlock
Motorola QC Diag Port (COM122), Provider: Motorola,

Driver ver.: 5.1.0.0, Date: 01/03/2013, USB\VID_22B8&PID_2EC1&REV_????&MI_00
Firmware: MPSS.DPM.2.0.2.c1.8-00005-M8936FAAAANUZM-1
Date: May 1 2015 00:07:22, Apr 15 2015 09:00:00, EAAAANVZ



Software IMEI: xxxxxxxxxxxxxxx
Bluetooth address: xxxxxxxxxxxxxxx


You should activate required PACK to work with this model.
For more information visit www.sigmakey.com



I have pack3activation