One or more of the strings used in the holidays (display) property (either the surround with or the separator string) or the holidays (multiple) property (the separator ) contains a holidays token.
The example below left shows the use of the [û] token in the text to display to the left of multiple holidays. If there are more than one holiday on the same date, then the [û] token will collect all the holidays symbols of all the holidays appearing on this date.

The solution, as shown on the right is to use the sequential version of the [û] token, with XX as placeholders that will be replaced at runtime.
Solution:
•Edit the problem string: Automatically opens the property editor so you can correct the string that generated this message.
Topic 015042, last updated on 01-Apr-2026