On a machine that is not part of a domain, the installation completes successfully, but MKS AlertCentre does not appear to be installed.

With releases of MKS Toolkit for System Administrators with AlertCentre prior to 8.0 the AlertCentre component was not installed by defaut on machines that were not connected to the network. You will need to do a Custom Install and ensure that the AlertCentre box is checked. This is fixed in MKS Toolkit 8.1: AlertCentre is installed on disconnected machines by default.