I installed the next version down on the list you sent, 4.0.3, and after installation and starting it up in Safe Mode, I immediately got an error message -- the registry backup had crashed. But, it did run the program. I know the change from "3" to "4" made significant changes, since I had to pay the fee again at that point, but it appears the first "4" version on the list you sent does run on this computer.
I thought then that perhaps I should re-download the latest version to make sure there is a problem -- since I was able to run the older program, and that could have cleared up whatever was stopping the latest version from running.
So I downloaded and installed 4.0.14 again, and in safe mode it did back up the registry -- and, this time, started running without apparent difficulty. In fact, it ran a bit faster than 4.0.3. Took about 33 minutes to complete. So, I guess all we can suppose is that the older version fixed the problem that had prevented the newest version from running!