I finally figured out the problem with Vista: On Vista, the installer fails to work correctly. The installer is still broken in this release, but the .zip should result in an usable installation. Work on fixing the installer is in progress.
To use the .zip, first install the right original version (there’s a link to it on sl.daleglass.net). Extract the .zip to the installation directory, overwriting any existing files, then run DaleGlassRelease.exe.
This version has a much more functional, but still unfinished Event Log screen, and an updated list of regions for the IM location logger.