@Bartimaeus Could you have a look at how HELM02.itm and HELM02_.itm are distributed to a BGT game, please? After installing BGT there is only HELM02.itm as 'Helm of Opposite Alignment'. After installing Item Revisions main component HELM02.itm becomes 'Helm of Despair' and it creates HELM02_.itm and makes this the 'Helm of Opposite Alignment'. There are at least two npc mods (Brage, Atjantis) that react to HELM02 as being the 'Helm of Opposite Alignment', so HELM02 should probably not