Since the launch of Genisis, our 2 modded servers ( Rag and Extinction), like many others have been unable to start.

I disabled all 19 mods, and then went, one by one, restarting servers. They hold strong without the eco mods enabled.

So it could be all or one of the 4 I have installed.

Have fun and go play now!

what eco mods you using?

ECO dev is aware of the issue. Most likely they referenced holiday assets which have been removed from the base game. They'll need to rebake their mod as soon as the Genesis DevKit comes out in about a month. This is common with mods when a new DLC launches.