ERROR: clGetDeviceIDs() -1

[harshitgoel96]

I am trying to run oclHashCat on my MSI HD6770 GPU. 

Software Information

Radeon Settings Version - 2015.1129.1552.28517
Driver Packaging Version - 15.30.1025.1001-151129a-297019E
Provider - Advanced Micro Devices, Inc.
2D Driver Version - 8.1.1.1533
Direct3D® Version - 9.14.10.1162
OpenGL® Version - 6.14.10.13416
OpenCL™ Version - 2.0.4.0
AMD Mantle Version - 9.1.10.99
AMD Mantle API Version - Not Available
AMD Audio Driver Version - 10.0.0.2

When I run the command i am getting,

ERROR: clGetDeviceIDs() -1


I am using oclHashcat v2.00 and oclHashcat v2.01, both are giving same error.