My copy of Photoupz shows version 1.7.1 dated 2013. Is the version offered on this page, i.e., 1.6, a newer or later version?
The version 1.7 of the application was released on 13/Apr/2013 and it brings the following enhancements.
There is also an official website to download this version from: http://www.photoupz.com/download.html
Version 1.6 has the following enhancements:
Algorithm improvements Guiding line improvements and fixes for multi-line/multi-angle cases Small bugfixes