When one selects add course from the administration block, the user is brought to a page to add category. They must then go into a category before adding a course.
In previous versions, if one added a course from this screen, it put the course in the miscellaneous category, creating it if needed. That was acceptable.
Also, because a user can now select a category when creating a course, one could be brought directly to that page.
This is a minor issue that any course creator could figure out, but the current behavior is not really very elegant.