Thank you very much.
It is a coincidence that also today a colleague also pointed me to the 3.1.2 release with the .exe extension.
Unfortunately, the .exe installed version of HDFView is not working.
After the install, if I try to run the HDFView program, a black DOS Command window pops up for about a half-second and then disappears, with nothing else happening after that.
I noticed that someone else had also posted this issues in the forum not too long ago, but without resolution in the reply.
Do you know why this would be happening during the attempted launch of the HDFView program, after it seemingly installed OK?