I am using the Certificates activity for Moodle 1.8.3 and it seems to be working great for the most part. One of the features of the locking on the certs is that you can require a minimum amount of time in the course. However, when I assign a value to this and save changes, it doesnt save them. It just reverts back to an empty space. Anything I might be doing wrong? When I use the other features as far as linking to a quiz or questionnaire it seems to work just fine. Any help would be appreciated.