Hi Steve, I'm the one who made the comment on the download page. Like you I did a clean install of 10.4 and have been unable to install it and get this error message (see screenshot). Did you have any luck? Looking at the documentation that comes with the download on page 3 it reads "Unique DLLs are required for each version of ArcGIS" which is probably why I/we are unable to install it. Mervyn Lotter, I know you said the tool is still available for you in 10.4, did that also mean you tried it?
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