Hum - - do you have a way to move or trick the installer that Blueprint made into thinking that it is using C:\MicroProse\Falcon4 ?
If you have a C: drive on on your computer can you move a dummy falcon install there and possibly adjust your registry with an entry to make it think it has falcon installed there?
The installer I built is a basic NSIS that executes Blueprints installer - - all I did was package it to make it easier to use. But, it only works for the standard C:\MicroProse\Falcon4 directory - - - I guess I didn't take into account folks with alternative installs. Sorry about that.
It might be possible to rework the installer for other directories. I look at that. Right now I am really busy with the ITO2 conversion to RV format so I am going to be on that task for a little while. Be patient and let me see what I can come up with.