I am installing FileMaker Server 13, so first I need to uninstall FileMaker Server 12. Wrong way: http://help.filemaker.com/app/answers/detail/a_id/9977 Right way: open "/Library/Application Support/FileMaker/FileMaker Server/FMS 12 Uninstaller.app" Uninstall FileMaker Server 13: open "/Library/Application Support/FileMaker/FileMaker Server/FMS 13 Uninstaller.app"