Did you try
EthDcrMiner64.exe -epool eth-au.dwarfpool.com:8008 -ewal MYWALLETNUMBER/RIG1 -epsw x -allpools 1?
why do I need to add allpools 1? I actually tried that and the miner is running however, when I check my wallet on the dwarfpool site, there are no ETH deposits and average hashrate is showing as zero so I thought that means its not working ?
Dwarfpool tends to suck at showing you average hashes and your miners stats at 1st for maybe 2-3 hrs dont worry its working, give it a try on nanopool youll see stats in 15 min.