With this mod the desiccation furnace on lignumis doesn't work, as it changes the moist stromatolite remnant desiccation recipe to need a surface temperature of 255K, which lignumis doesn't have
Without that you can't make steam you need to progress off the planet

Huh, that's strange, I just checked with my save, I can use the recipe and "my" Lignumis reports a temperature of 288K...?

Interesting, maybe I have another mod that changes lignumis temperature, will investigate

Edit: When only enabling lignumis and it's dependencies, it doesn't show a temperature at all, so I need to find which mod I have that enables temperatures

Ah and by digging around, I believe Cerys itself imposes the 255K limit: https://github.com/danielmartin0/Cerys-Moon-of-Fulgora/blob/191244d6e8263412d15e3c4feb37543331896294/compat/autoban.lua#L70

I see this in the logs:
Script @Cerys-Moon-of-Fulgora/compat/autoban.lua:70: [CERYS] Restricting temperature: moist-stromatolite-remnant-desiccation

And I believe that's because of their "softban" thing, maybe they don't want steam to be produced there by other recipes:
https://github.com/danielmartin0/Cerys-Moon-of-Fulgora/blob/191244d6e8263412d15e3c4feb37543331896294/common.lua#L83

So I think "Wooden Cerys: Lunaponics" isn't doing the modifications, Cerys itself does... which would be fine for Lignumis if it had a higher temperature...

What temperature does your Lignumis have?

I have the mod "Redraw Space Connections" installed, I don't understand how a planet's temperature is specified in the first place, but maybe distance has something to do with it and this mod changes something, such that I have 288K on Lignumis...?

yeah I wonder about temperatures... I've seen PlanetsLib do something with them, but obviously both Lignumis and Cerys depend on PlanetsLib...

Edit: or maybe Cerys enables it globally...? https://github.com/danielmartin0/Cerys-Moon-of-Fulgora/blob/191244d6e8263412d15e3c4feb37543331896294/settings.lua#L110

When I install cerys and cerys lunaponics it has the correct temperature of 288K, before with other mods installed I had 18k
Still need to find which mod reduces the temperature on lignumis

When I install cerys and cerys lunaponics it has the correct temperature of 288K, before with other mods installed I had 18k
Still need to find which mod reduces the temperature on lignumis

Alright solved my problem.
The issue was the freezer mod. it has it's own temperature mechanism and adds temperature to surfaces in celsius instead of kelvin. So it adds 18°c to lignumis, which breaks other mods that use kelvin
I disabled the temperature mechanic in Freezer, and now my Lignumis has the proper 288K temperature.

Thanks for your help!

LOL ok thanks I thought about adding Freezer to my save but didn't :-) you might want to report it over there so they know, but at least we now know :-)

Their stance is "Anything using Kelvin is incompatible, just turn off temperature settings if you care"