AS I mentioned in post #23 above: "The "Magic Resistance" condition is added to a NPC when it is added into the combat tracker if it has a power name of "magic resistance", as part of the parseNPCPower function."
It doesn't work if Magic Resistance is in the NPC Damage Resistances field - because, having it in that field seems to suggest a resistance to damage, hence why it is parsed as RESIST:magic - which gives damage resistance to magic damage types, because the data is in the Damage Resistances field. Can you give examples of the creatures that have this possibly incorrect data placement?