I installed Geth, and successfully synced the blockchain.  However, regardless of whether I use Ethminer, Ethminer with Stratum Proxy, or qtMiner; I always get the same error.  It doesn't *really* throw an error; the mining application just crashes.  For ethminer, the command I used is: 

`ethminer -U -F http://eth-eu.dwarfpool.com:80/0xc780f6a9de1cca4e3e5bb25e9dfe0ee52d6d87a6` ([source][1])

The output I get is: 

    Forked from github.com/ethereum/cpp-ethereum
    CUDA kernel ported from Tim Hughes' OpenCL kernel
    With contributions from RoBiK, tpruvot and sp_
    
    Please consider a donation to:
    ETH: 0xeb9310b185455f863f526dab3d245809f6854b4d
    
    Using grid size 8192, block size 128
    
    Found suitable CUDA device [GeForce GTX 980 Ti] with 6442450944 bytes of GPU memory
    miner  15:47:47|main  Getting work package...
    miner  15:47:47|main  Grabbing DAG for #129656ac…


When I use ethminer with Stratum Proxy, I get this line of output while ethminer is running:

    2017-06-22 16:48:19,914 INFO proxy # Hashrate for 2130706433 is 0.0 MHs

Here's the troubleshooting I've tried so far:

 - Using different miners (qtminer, ethminer, etc.)
 - Using different mining pools (dwarfpool, ethermine, etc.)
 - Clearing the blockchain and resyncing more times than I
   can count
 - Running mining software both with and without simultaneously syncing with Geth

I am attempting to mine on my Windows 10 machine with a NVIDIA GeForce GTX 980 Ti card.  At this point, I've spent several days reading/trying everything I can.  I suspect there's something dumb that I overlooked.  Any thoughts?  Thanks!


  [1]: https://steemit.com/ethereum/@gobbahfett/easiest-guide-to-mining-ethereum-eth-windows-amd-nvidia-part-1

____________**UPDATE:**____________

Two observations:

 1. If I switch ethminer to mine Expanse (change `eth-eu.dwarfpool.com:80` to `exp-eu.dwarfpool.com:81`), then everything works perfectly.
 2. I tried claymore miner, and it works.  However, it was much slower than mining EXP with ethminer; so I would prefer to figure out how to get ethminer mining ETH properly.