Bug report for version 3.0c using '-coin' flag.
Defining " -coin etc " results in miner failing to start, stating unable to resolve what looks like a blank pool entry.
Removing the -coin flag allows proper operation but DAG must regenerate for devfee and after (thinks coin is ETZ).

Phoenix Miner 3.0c Windows/msvc - Release
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Available GPUs for mining:
GPU1: GeForce GTX 1070 Ti (pcie 1), CUDA cap. 6.1, 8 GB VRAM, 19 CUs
GPU2: GeForce GTX 1070 (pcie 3), CUDA cap. 6.1, 8 GB VRAM, 15 CUs
GPU3: GeForce GTX 1070 Ti (pcie 5), CUDA cap. 6.1, 8 GB VRAM, 19 CUs
GPU4: GeForce GTX 1070 (pcie 6), CUDA cap. 6.1, 8 GB VRAM, 15 CUs
GPU5: GeForce GTX 1070 (pcie 7), CUDA cap. 6.1, 8 GB VRAM, 15 CUs
GPU6: GeForce GTX 1070 (pcie 8 ), CUDA cap. 6.1, 8 GB VRAM, 15 CUs
Listening for CDM remote manager at port 4028 in full mode
Eth: the pool list contains 2 pools
Eth: primary pool:
Starting GPU mining
Eth: Connecting to ethash pool  (proto: EthProxy)
Eth: Can't resolve host  - No such host is known
Eth: Reconnecting in 20 seconds...
GPU1: 55C 70%, GPU2: 57C 70%, GPU3: 47C 70%, GPU4: 61C 70%, GPU5: 54C 70%, GPU6: 55C 70%