The version of Rampant 0.18.6
What is your map evolution 0.3682
Was Rampant added at the start of a game Yes
A brief description of what you are experiencing attacking biter base' rarely crashes
A brief description of want you are expecting not crash
Are you using custom world generation, if so what mods? i don't think so, will add mod list
Add a save https://we.tl/t-fZbeONvGws

Img of Crash error https://imgur.com/a/fqVQBAd
Factorio-Current https://pastebin.com/JU9Xv6aD
Mod-List https://pastebin.com/AJeHDHsn
Mod Startup Settings https://imgur.com/a/sxpAqkU

All mods have been enabled since the start of the map gen
crash seems to be random and not very often

You aren't on a surface that Rampant has detected.

the surface you are on is called game_surface, any idea on how you got to this surface?

nevermind that is the surface team competition puts you on.

yea i did see that, bit strange, there shouldn't be biters on the spawn zone i would assume

I've added some logic to be able to set the active surface. The next update should fix this or at least give you the tools to fix this.

Rampant only lets you set one surface to be active for the logic and the default in the current build is nauvis or a couple other predefined surfaces.

thank god, i cant even play my current save, will that update be released soon?

in the next few days I imagine.

thankyou :)