I'm running into the problem of my edited spells simply not working at all. I'm using the 4 player mod as the basis for my changes, but whenever I edit a spell in SkillData.txt (4player/Stats/Generated/Data/SkillData.txt) the changes simply don't show up at all or the spell's description simply vanishes and the spell becomes unusable.
For example, I changed Vampiric Touch to TargetRadius 15 and DamageType Shadow, but no dice.