Can anyone post a mod which effects a single item in the main campaign? Be it actually introducing a unique item or changing the mod values around?

Every single edit I've made so far of Armor.xlsm, Weapon.xlsm, and DeltaModifiers.xlsm has created a "trying to add boost to boostgroup, but no current boostgroup?" error in the "messages" part of the editor on level load. Is this /normal/? I don't want to make a bunch of item modifications, start a new game, and then realize they aren't working at all. There's nothing indicating my item mod changes are taking effect and that at least according the editor I'm doing something wrong. Right now, I'm only changing Armor.xlsm and Deltamodifiers.xlsm. This happens even when I delete EVERYTHING from Generated and generate all again and even when I only modify existing DeltaModifiers.