Q. Why did the name of the attachment change went sent through the course emailer?

The Course Emailer does not support the use of special characters (such as n-dashes) in the file names of attachments.  The Emailer strips out the special characters and replaces them with an underscore.  The Windows operating system auto-replaces two consecutive hyphens with the n-dash character.  So you might not even know you’ve used a special character! To make sure your attachment goes through: please limit the characters used in file attachment names to the following characters: A-Z (both upper- and lower-case are fine), 0-9, periods, spaces, and underscores.