[post_category_name] comes up blank

Hi All.

I’ve got a form for posting notices to a new post, but the [post_category_name] is coming up blank, so it appears in my dashboard posts list as “uncategorized” even though it is set in the form.

Added to that, in the email portion, I have this set:

Author: [post_author_name]
Subject: [post_title]
Category: [post_category_name]

yet the e-mail I receive is this:

Subject: testing post_category_name

As you can see, both the entire line containing the author and the entire line containing the category are both deleted from the received e-mail. But in the WP dashboard when I view the list of posts, it shows the correct author there, but no category, it is listed as “uncategorized”.

Where have I made my error? ??