The script has been updated to be compatible with v18, defining the symbols for items that had their internal name changed in v18.
It will continue to function in v17. You do not need to redownload it.
There was a missing entry in the Fairy Generic recipes, which would cause it to crash. If you downloaded the script in the last 2 hours, it will crash with 4 40 value items with a fairy type base.
The script has been updated.