Driver Station Update fails to install

[Crossle86]

I have been busy with other things for some days now but am back to this problem now. The last reply indicated the 2015 DS does not use the file date as part of its version number...but on my systems this is still happening. The key thing that I am seeing and may explain some of what I have been struggling with is this (which I am looking at on my DS PC right now):

I have two program files:
Driver Station.exe (renamed from DriverStation.exe, believed to be the current vesion)
Driver Station-upd-0.exe (renamed old version)

Now these two programs are both exactly the same size and both programs show the windows properties version of 15.0.0.49156. Yet when I run these programs I get different version numbers displayed:
Driver Station.exe = 05031500
Driver Station-upd-2015-0.exe = 20121300

How is this possible? One thought that keeps recurring is that I have used the wrong installer for the current version, but I followed the links on the current software version web page and installed from there...and version ending in 1500 is identified as the current version...so?

Also note that if the installer is installing a changed program name, Driver Station.exe -> DriverStation.exe, it is not updating the shell registry key that starts the DS program as the Driver users shell to reflect that change. That key still has Driver Station.exe as the alternate shell.