Testing the "install" feature I think is a bit premature.. as it is with the beta 11e it will only install "IF" there is no pre existing copy in the system32 folder. This is how Jim circumvented the replacing of the play list... (I think).
Not that it matters, but I don't think that is accurate.
Installers install, even if there is a pre-existing copy (it's called "updating").
And most installers (including the one that installs MA3 10d)
do not replace existing files, like C:\Users\YOU\AppData\Roaming\Marine Aquarium 3\MA3Playlist.lst and MA3Logolist.lst, if they already exist (unless a file format change is necessary).
I understand Jim's reason for not doing it. I just note that the installer version would have eliminated the confusion between "how Nicki did it" and "how I did it", and why there were differing results. And the few hours that Nicki and I spent unnecessarily.