Im not sure, but it sounds like the developer is assuming you compiled and
installed the program from source code. He did not appear to be aware that you
installed it from the repositories. Even if he was, he may not (probably
doesnt, actually) have any control over how the program gets packaged into the
ubuntu sofware center repositories.

What that means, is that he probably doesnt know where it ends up any better
than you. I had the same problem you are describing recently when i installed
Calibre recently from the software center. After not being able to find it, i
just settled on opening a terminal and typing "calibre" to launch it, even
though it wouldn't be to hard to make a shortcut to open it or add to the menu.

What is the program you were trying to install? With that info, someone can
probably help you get this sorted...