• In viewing or grading the assignment of students, the progress wheel just keeps spinning and I cannot see the submission.

Solution: press “Change user” option (upper right) and reload. See illustration below. (The viewer could just be stuck with a document for which Moodle doesn't have the right viewer. Pdf files should work just fine. Your browser should also display such document type.)

• Viewing <url>/my outputs this error message:

Coding error detected, it must be fixed by a programmer: assign_print_overview() can not be used any more and is obsolete.

We have no solution at the moment. But the right panel already displays a user's courses.