It seems with a lot of mods this mod adds way too many collision layers. It's adding 83 collision-layer prototypes to my game which is more than the hard-coded engine limit of 55. I'd be happy to provide my log file if it helps. But for now I'll have to play without, which is sad because I quite like the concept of this mod.

I understand, so this mod requires making a collision layer for each plantable tree type. Without the collision layers, there is not way to get the Cultivators to be locked to the appropriate tiles/biomes etc. Or at least that was the only solution I could find. I will return to investigate if I can figure out another solution (as I am much more familiar overall with factorio modding now) however, unfortunately I doubt that this issue can be fixed.

Thanks for the quick response. I understand if it's impossible to fix. My use case is pretty unique since I'm playing with a lot of random mods I found on the mod portal. Thanks again, and a (late) Merry Christmas to you.

Just so you are aware, the latest version has a work-around fix for this! Just alter the mod setting to allow cultivators to be placed anywhere, you could abuse this yes, but at least your game wont crash loading the mod! And who knows, maybe it'll be fun to grow yumako on vulcanus, I don't know. Haha

Thanks for the heads-up. Incidentally this fix is actually perfect for me because I already use a mod that allows placing Yumako and Jellynut soils anywhere including other planets, so my "intricate" self-balance isn't broken. I guess I'll be reinstalling this mod :)