I feel like a complete doofus asking this (yes, you're allowed to call me one)
I've followed every step they say you should follow. I created the mod folder (simply xymod right now), put all the reference files from the ForgeTools (v3) and went about making them all non-read-only so I could actually change the dang things.
I made only a few small tweaks, such as turning research buildings into 0 logistics slots, and making the TerraHome give out more resources, oh, and removed the fleet upkeep percentages from the fleet size upgrades.
I enter Sins: Entrenchment 1.2 (which is also where the mod folder is, just to make sure) and then I go to mods...voila, it's there! I activate the mod, and click "Apply Changes"...
And death. I've tried it literally a dozen different times, even going so far as to remove all my changes and simply trying to load any of the files. Zip. Nothing. The game freezes, and half of the time it froze my entire computer, requiring a cold reboot.
So...any ideas? Am I the largest idiot on the planet? Did I miss something? Or is something else going on here?