[2023] cannot create a world !

There is currently a problem with worlds not being created when "random generation" is selected, you can work around by starting the dedicated server executable manually to generate a random world (in steamapps/common/Eco/Eco_Data/Server) and load it from the client. We will fix the issue in the next hotfix.

As for unity crashes on first launch, those are so far all caused by older cpus that do not support AVX2 / SSE4 instruction sets and below our minimum requirements. We are working with some affected users to find a potential fix - all info and updates for that are posted on our discord, as we need direct contact: https://discord.gg/eco