I have been having this error with my gtx 660se
cuda error in func'qubit_luffa512_cpu_init' input at line 446, invalid device symbol
ccminer does work with my gtx 770 very well, but i have just not been able to get this to work
this is the batch file for my 660
ccminer-30-35-50-52.exe -t 2 -d 1 --algo=qubit -o stratum+tcp://stratum.dgb.theblocksfactory.com:9000 -u greedytacothief.1 -p x -f 10