After leaving Lignumis for the first time u need to research it to be able to get back to it. The research is behind asteroid collector wich need Lignumis science to unlock. Not sure who to contact for this so I already posted in the Muluna forums as well. It's rly minor and I used the editor to research but thought I should let the authors know.

Lignumis discovery should be researched automatically when you start a fresh game. The technology exists for people who add the mod to an existing game.

Can you give me some context? Did you start a fresh game with it? Do you play with "any planet start"?

Anyway, I should make sure, Lignumis science packs are not needed to unlock it.

I had a look and don't see it. Could you provide me a savegame via Discord (or post a download link here)?

sry, it was a problem with Muluna, the Author solved it in the new patch. Thx