I have the Mac version of D:OS from Steam, and installing the new version of the mod (just found it last night), the mod doesn't seem to work right. When I create a new game with this mod enabled, all of the skills from character select are messed up.
As an example, I select Scarlet as a Knight. Then I customize her to have Witchcraft and pick Bloodletting. At that point, the icon looks like Bloodletting, and the spell label is "Bloodletting" but the tooltip description seems to be the Geomancer poison skill. If I go ahead and create the game, hitting the "Bloodletting" icon does indeed cast the Geomancer poison spell (and the tooltip reads as if it were poison). This is 100% reproducible for me. Similarly, if I pick the Geomance "Summon Spider" spell, the spell I actually get is "Blood Swarm" (also 100% reproducible).
Hopefully that helps you debug this, it's a great idea for a mod (and honestly addresses something the devs should just fix)!