As an instructor, I am trying to upload a document in the Assignment Comments section for students (while in the SpeedGrader) but it is "stuck" in the "Submitting". When I click to go to the next student it gives the the message "You have created a comment that has not been posted..." and I click "Cancel" and wait and wait but it does not go anywhere. When I click on "Proceed" (trying to get out of it), the same file appears to go to the next student, but the same cycle happens. Please help.
