Hey
Ive never coded in LUA before, hardly used Dustman, and have only had ESO for about a week now.... BUT, I made the change below to the file, and the error is gone now. Let me know if it all still works properly
(I do suspect that something - the useable ingredients list - in the addon might not work properly with this change)
1. Open the file in your documents folder: \Documents\Elder Scrolls Online\live\AddOns\Dustman\Dustman.lua
2. Find line 216, which has this: usableIngredients[itemId] = known
3. Replace that line with the following:
if itemId ~= nil then
usableIngredients[itemId] = known
end
4. Save the file
5. Reload the UI (if you are in game already)