anyone know why this isnt working? Miner simply doesnt start.

sgminer -o stratum+tcp://drk.coinmine.pl:6090 -u myuser.worker -p x --gpu-engine 1100 --gpu-memclock 1150 -k darkcoin -I 19 -g 1 -w 256 --thread-concurrency 20000  --lookup-gap 2 --no-submit-stale --gpu-fan 85

One of the sgminers writes "Kernel darkcoin is experimental" and doesnt go on the other doesnt even start.