I just downloaded the PVIIexman_017 and followed these instructions on my new MacBook Pro running Sierra. Everything worked just as you described. However, if I drag the PVIIexman app to the Applications Folder after going through your steps, I get an Error when I try to launch it? Maybe when I first download it, the app has to be dragged to its final destination first (rather than to the Desktop and then back into the original folder)?
This is the Error I get if I move the app:
Error: Command Failed: /bin/sh -c "/Applications/bin/MACOSX/Contents/MacOS/ExManCmd" -- list all /bin/sh: /Applications/bin/MACOSX/Contents/MacOS/ExManCmd: No such file or directory
Also, not sure how difficult it is, but it would be nice if the PVIIexman had a standard File>Quit (Command-Q) menu command?