OK, I can't figure out how to make a custom TechTree under the mods directory.
If I place my file in the standard TechTree directory, my custom character can select that techtree.
No matter where I place the file in the mods directory, it doesn't show up. I've put it under data, under tech, even creating a new TechTree folder and putting it there - nothing.
I have enabled the use of mods, and selected the correct mod directory.
NEbody?