First, I did write Install programs in my younger years and therefore know what they are like.
Second, the Triple Scoop Music installer is looking for the Music folder during the install process. However, I had modified my Music folder to point to a share on a NAS. Unfortunately, the NAS was not available when I was trying to install the program therefore the installer could not find the folder. When I realized the problem, I reset the Music folder to its default location on the local drive, et voila, the installation completed successfully.
This brings me back to my earlier point about a meaningful error message to the user stating that a specific path could not be found, would have put me much sooner on the right track to solve the problem.