Re: Claymore's Dual Ethereum AMD+NVIDIA GPU Miner v15.0 (Windows/Linux)
ETC stopped mining for me as well on SMOS, ETH works fine. RX580 8GB cards... heck will need to move to another miner as well 
I have already file an issue on Claymore's GitHub. I hope it will be an update soon. I can confirm that ETH is mining ok.
I dont think Claymore has GitHub, most likely its fake.
And only download the miner from this site.
https://mega.nz/#F!O4YA2JgD!n2b4iSHQDruEsYUvTQP5_w
Link from first page.