00:27:00:658 890 GPU 2, GpuMiner dk2a failed -4
00:27:00:820 ba4 GPU 2, GpuMiner dk2an0 failed -4
00:27:00:831 9dc GPU 2, GpuMiner dk2an0 failed -4
00:27:00:839 83c GPU 2, GpuMiner dk2an0 failed -4
Any ideas?
280x,win10 x64.
Did you try:
set x GPU_FORCE_64BIT_PTR 1