The holidays set associated with one of the aeiou-saints/namedays of the saints/namedays options of a DiaryGridLine refers to a holidays set which no longer exists in the holidays sets 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.
You will not be able to generate this diary until this error is fixed.
Solution:
•Change Holidays Sets: Opens the saints/namedays options property editor, so you can remove references to this holidays set.
Topic 172870, last updated on 19-Apr-2020