ok, after doing some further checking on this end, my problem is not exactly the same as above.
The student says that they submitted their assignment, it shows as being submitted and cannot be updated. If she goes back in later she can see her assignment (word doc in this case) is still there. The issue is the instructor is saying he has not received the assignment. The instructor does not see the uploaded assignment when he goes in and looks at the submitted assignments. We have 2 instructors working on the one course, so the other said they will check once the next assignment is sent to see if either or can see the submitted assignment.
The issue is as I understand it is, the instructors are not seeing the submitted assignments when they go in to the course site and check submitted assignments. This has happened on approx. 4 course sites right now - or at least what people have told me.