Some sort of trouble starting the server

I have the same problem. The game just won't create new worlds.
No mods, server or client side.

Same here, I saw another thread about it. The only way I can get in a world is 1. connecting to someone else or 2. creating a new world with mods and caves off

yeah me too, but it failed when i put the caves on 

 

Same here. It just suddenly didn't work the next day. I also can't create a new world, it says the same thing: Dedicated Server Failed to Start. There was some sort of trouble starting the server. Please try again.

Same here too. It seems like the caves are the issue, if you create a world without caves it should work.

seems the problem is related to antivirus, creating an exception for my steam library in avast fixed it for me

2 hours ago, iaregravy said:

seems the problem is related to antivirus, creating an exception for my steam library in avast fixed it for me

This worked for me too, thanks