Okay, had it working, tried some other miner, did a full windows reinstall... now cant get it to work. I'm just trying the basic commandline from the site, with my username and miner number.

What i get is the startscreen with the jansson 2.7 line. then the screen dissapears. Am I missing something? It worked like this before, also on a clean windows install....

sgminer.exe -k myriadcoin-groestl -o stratum.dgb-groestl.theblocksfactory.com:9003 -u Mister_E.M1 -p xXx -I 20