FWIW a bunch of the step-by-step setup/tutorial/how-to-documents floating around (some pinned here on the forums!) make the same -c mistake. I just discovered this myself. :/

Bah. A few of the "headless server setup tutorials" list using -c instead of --server-settings. This thread tipped me off: viewtopic.php?f=49&t=52673&p=308067&hil ... on#p308067

solved!

If anyone running headless linux 16.12+ can share a credential-sanitized settings JSON I'd be greatly appreciative.

Heya, getting this error trying to start up my headless server on the latest (16.12 as of this writing): Error GlobalContext.cpp:1014: /opt/factorio/data/server-settings.json: Bad file format; ignoring I've put the json through a validator and it's checking out, I think it's just missing a default t...

Also wondering this -- I want to run a headless marathon-mode-server and not sure how to do that.