An assignment grade column, created automatically when the assignment was created, is not found by BlackBoard. I can see it. Students can see it. But BlackBoard thinks it doesn't exist. When I first created the average grade column it recognized all the assignments. Now this one assignment is thought by BlackBoard to be non-existent, even though it and its associated assignment are still in the course.
Does anyone have an idea how I might fix this glitch? (It's probably something I did in the first place, but I'm not sure where to start to find the error.)