Just installed AEM Manager V. 22.214.171.124 on my office machine running WIndows 7 (64 Bit).
Did that more than once because the installer terminated silently after 2-3 seconds. Turns out it was already installed successfully. IMHO some kind of success message should be displayed at the end of the installation process.
yes, this is a known issue with the AEM manager installer.
the installer is done with http://wixtoolset.org/ which is a very powerful but also quite complicated tool.
i was not yet able to activate some sensible installer screens during the installation.