You can download it from here:
http://mzmanager.dk/download/mz-manager-2-4d/
Release notes:
http://mzmanager.dk/forums/topic/v2-4d-release-notes/
If you already have MZ Manager installed as an older version, it is highly recommended to do a manual backup of the entire folder, before overwriting it with this new version!
Setup the shortcut to run mzmanager.exe as an administrator or power user.
During the upcoming week I will set up a Forum on http://mzmanager.dk for users to be able to provide feedback and deliver bug reports.