I run Mojave (OS 10.14.6) on a late 2014 Mac Mini and thought there should be no problem in installing Aperture 2 but I get an error message of incompatability that suggests I might still be able to install but that is might fail or cause damage. Aperture 3 appears to be compatible from what your forum says but I need to install Aperture 2 first. Can anyone help please?