BTW, wondering what the settings for solo mining SC are? Did not see if that was covered already. Simply specifying http://127.0.0.1:9980 results in something like invalid work...
From examples:
ethpool, ethermine (and Siacoin solo): EthDcrMiner64.exe -epool us1.ethpool.org:3333 -ewal 0xD69af2A796A737A103F12d2f0BCC563a13900E6F.YourWorkerName -epsw x -dpool http://localhost:9980/miner/header -dcoin sia