sony expria d2303d unlock error

SigmaKey 2.29.06 ADB: Direct unlock
* daemon not running. starting it now *
* daemon started successfully *
^ Android Composite ADB Interface
Version: Linux version 3.4.0-gc82e70f (BuildUser@BuildHost) (gcc version 4.8 (GCC) ) #1 SMP PREEMPT Mon Aug 10 21:54:32 2015
Phone model: Sony D2303
Android 5.1.1; Firmware: 18.6.A.0.182; Date: Mon Aug 10 21:54:32 CST 2015
Version: 18.6.A.0.182
Baseband Firmware: 8926-DAAAANAZQ-00031-26-001
Baseband Processor: Qualcomm MSM8926
Reading security block....Driver start error

i need help.