v3.0.0 doesn't work for me. It appears to successfully connect to luckpool.org, receive a difficulty value from the server, and then says "Miner died, restarting"; repeat, ad nauseum. This is a Win7 x64 SP1 machine with (2) GTX 1060 3GB cards. DSTM 0.5.6 and 0.5.7 work fine (indeed, 0.5.7 is running now) on the same pool with the same credentials.
At this point I am done screwing around with this train wreck, as I am philosophically opposed to paying for the "privilege" of being a beta tester.