@@ -174,9 +174,11 @@
 		-- an enchanted item.
 		local e = sorcery.enchant.get(stack)
 		local p = 0.0
 		local ct = 0
-		local slots = sorcery.matreg.lookup[stack:get_name()].data.slots
+		local slots = sorcery.matreg.lookup[stack:get_name()]
+		if not (slots and slots.data and slots.data.slots) then return p, ct end
+		slots = slots.data.slots
 		-- TODO handle strength-boosting spells!
 		for _,s in pairs(e.spells) do
 			if s.id == id then
 				p = p + ((s.boost * slots[s.slot].confluence)/10)