I've just updated my Moodle from 2.9.3 to latest 2.9.3+ and i now face a problem.
When grading a student, i can open the dedicated screen, but when i press "Save changes" button to save grade (and feedback comments), i have this error message :
Aborting save. Moodle could not determine which user to save the grade against.
More information about this error
Anybody having the same problem with the same version? A solution?