I get "Unable to query number of CUDA devices" on a 1080Ti
Download newest nvidia gpu drivers, 384.xx
Yep that worked, thanks! I "only" get 49.05 on my 1080Ti now - was 51.8 on the 1.1.0 version. Will let it stabilize and then go back to the older one if it stays this way.
i went back to 1.1 because i lost ~1.5-2 mhs on my 1080ti with ccminer 1.1.1 , same numbers as you