Try new version download from github, it seems works but pool for devfee not always ethermine.
what do you mean mining solo mode on ethermine?
Nothing special. I meant I dont mine 2nd coin, but it should not matter. My bat for example is : nodevfee.exe EthDcrMiner64.exe -epool eu2.ethermine.org:4444 -ewal 0xcb4effdeb46479caa0fef5f5e3569e4852f753a2.worker1 -epsw x -r 1
Try experimental version it is meant to fix pool switch problem, but I cant really test, cause havent noticed mine switch pools.
You should see NoDevFee: connect -> message in console if connection is being redirected.