Hi Simon
Many thanks for the reply.
We are running Totara Version 1.1.13 (Build: 20120314.0).
Yes I'm referring to the Reminders course setting from the course admin menu.
When trying to access this setting, we receive the message "Course reminders are unavailable as there are no Feedback activities in this course".
The workaround we used was to temporarily add a feedback activity, remove the reminders, then remove the feedback activity.
Gary