This scanning message appears in a textbox where all the opening and closing braces [] are matched except for a single closing brace ] that occurs after the last matching pair of braces.
For example:
[1d] [1Dddd] 1w]
If you do not see the offending brace, it may be because you are using a special font (such as holidays boxes) where the braces characters are replaced by another character.
Topic 174480, last updated on 12-Mar-2019