I had Optuma 1.6 and it was working in Win10 64 bit machine, but post PC crash, I retried but it is not working. Over time, those 1.6 files are also lost, so not having anything as of date.
Just now, while writing, I have taken what @Puzzle has shared
https://www.4shared.com/s/f_pN1NgPyku
Pass: 123
Whatever is made available in the above 4shared link was downloaded from this forum (most probably from the link that you referenced in your post)
The zip file contains all relevant uploads with screenshot.
Pass: 123 ... is to open the zip file I posted. There is another pass to open relevant file (check notepad in file)