error: too many positional arguments at '--grin-cuckatoo31'
I trying --algorithm grin-cuckatoo31 --pass x --pool stratum+tcp://grincuckatoo31.eu.nicehash.com:3372 --user xxxx@grincuckatoo31.eu.nicehash.com:3372
the format of args passing to kbminer is totally correct.
but the error message shows that your add an additional - before grin-cuckatoo31, which will be treated as an unrecognized parameter.
please remove that - and try again