Claymore's Dual Miner OpenCL error OpenCL error -38 - cannot write buffer for DAG

Hello,

This regards the following error:
OpenCL error OpenCL error -38 - cannot write buffer for DAG


Configuration:
AMD FX-8120 3.10GHz AM3+
Corsair Vengeance 16GB (4x4GB)
ASUS Radeon HD7990 6GB 768bit DDR5
ASRock 970 Extreme3
Samsung 850 EVO 120GB
Windows 7 Professional 64 bit

Any ideas for solutions please?

Thank You