https://i.imgur.com/GLLla0L.png

The only mods showing as altering the recipe are those this mod is configured for, so I'd assume something is going on with the compatibility patch, but I don't have the know-how to look and see what's up.

Odd, I have the same set of mods in my game and Plutonium shows up. Can you post your mod settings for K2, NF, and Schall?

https://i.imgur.com/ZaX3LBU.png

(Pardon the misalignment, had to composite it from a few screenshots owing to screen size)

It defaulted to the classic fuel cycle it appears, but changing that to the more recent doesn't result in a change.

However, disabling Schall's reprocessing cycle changes, while on the Alternative fuel cycle setting, appears to have corrected the issue, resulting in the following recipe -

https://i.imgur.com/NlChSLP.png

My suspicion is I should have disabled that in the first place given I was running it with Nuclear Fuel, but it didn't occur to me to do so as Schall's mod had mention of compatibility.

Anyway, hopefully this gives you the data to determine whether it's an issue you can / should interact with in the patch setup, or just something that merits a warning to ensure all mod settings are configured to suit your patch.

Ah, yeah the Schall setting to modify nuclear fuel reprocessing is probably it. Schall's mod description states:

GotLag Nuclear Fuel is compatible. Mod option "Modify nuclear fuel reprocessing" should be switched off, so it generates plutonium for further production.

So it's really just an interaction between NF and Schall. I could add a warning or something to my mod, but I think really it should be in Schall's mod. You could open an issue there to ask about it. If there is a real use case for having NF installed and that option enabled, I could add some compatibility tweak to my mod.

Yeah, I missed that in their description. That's the culprit then, and probably doesn't need a warning or anything on your end, just more careful reading of the details when installing new mods on the user side. All's well that ends well then, thanks for the time checking this out.