Source: international.
One of the saints/namedays properties of the current script's international scriptline refers to a holidays set which no longer exists in the database.
➢This message cannot be due to renaming, or moving a holidays set; this message is only triggered if the holidays set has been deleted.
The current script cannot be previewed or run until the reference to this holidays set is removed.
Solution
•Change Holidays Sets: Opens the saints/namedays property editor, so you can remove references to this holidays set.
Topic 172840, last updated on 22-Mar-2021