Why do I see a Windows Installer progress meter or dialog box when installing MKS Toolkit or MKS AlertCentre?

MKS Toolkit and MKS AlertCentre require Windows Installer version 2 because of bugs in version 1.x. If you do not have Windows Installer on your machine, or you have version 1.x, Windows Installer will automatically be installed or upgraded to version 2. This is expected behaviour for the installation routine.