@LeDouke there is a problem related to an asset saved in capital letters - Windows® doesn't care about capitals, but Linux definitely does. This is happening with other mods with capitalized letters as well. For finding the problem, run dwarfort (in your game folder) from Terminal.

For this mod, the problem is with the asset Moon_elf_HAIR_STRAIGHT.png - just rename it without capital letters, and it should load fine on Linux

Here is the thread
https://psteamcommunity.yuanyoumao.com/app/975370/discussions/0/3878219568766342886/

Here is the bug tracking report
https://dwarffortress.mantishub.io/view.php?id=12568