I recently upgraded to Moodle 2.4 from 2.2 and migrated the database to a new server. Everything seems to be working fine except the bulk user upload. Uploading the file is successful, and I see the first 10 lines of preview, but the options that should appear below the preview and the "Upload Users" button are missing. Do I need to change some setting or re-install something? Or is this a bug? Any suggestions on where to start trouble-shooting would be appreciated!