Unknown argument for ':' operator.

This error generally occurs during search or replace when regular expressions or wildcards are used in a search string. The operator colon (:) was entered but the argument that followed was not a valid argument.

Note   Arguments for the colon (:) operator are case-sensitive.

To correct this error

• Review the correct regular expression syntax located in the topic �Regular Expressions.�
• Double-check that the correct case of the argument was used.
• If you are using an Input Method Editor (IME), make sure that the argument is not given using full-width characters.