I did a fresh installation of Civi 4.7.14 with Drupal 7, and have realised that for some reason all the relative date filters are missing. I've been able to add the one I need manually at civicrm/admin/options which is good, but it would be very time consuming to do this for all of them. Has anyone else encountered this problem?
Edit: Here is a screenshot when creating a custom report. In the Activity Date drop down their should be a whole load of preset relative date filters, but you will see there is only the one: 'Last 12 months including today', which is the one that I added manually at civicrm/admin/options.