Hi, i downloaded your mod today and also added the zip file for the zerg race into the appropriate mod folder.

when i start a game however, either the game loads with vanilla biters, or it reloads all mods and then throws me into the main menu.
(like here https://prnt.sc/108tl8z )

both mods enabled (rampant nor hardcorio are installed) https://prnt.sc/108tlom

World Mod Settings https://prnt.sc/108tmb8

Do you have any idea what i could do to make it work?

I found the issue myself - RSO overwrites the mod and makes the enemies be vannila again.

is there a way to use both mods?

Hi.

I'm not sure at the moment. I have to dig RSO to see whether it's compatible. All units in this mod are set up in data loading phase and most of the unit control and spawn logics are from base game. If RSO overwrite them after data loading phase, I imagine that may not be an easy fix. I'll update here once I have time to take a look RSO.

Hi Tinteex

Can you try enable "Use vanilla biter generation" in startup tab and disable "Use RSO biter generation" in map tab for RSO settings? This option combo looks working for me.

When "Use vanilla biter generation" option is off, it kills the base game spawn logics.