Of note, you might want to take the function of the installer that searches for prepar3d out Pete.
It's currently crashing on my system, because it can't find my prepar3d version number. This is because I unintalled prepar3d in anticipation of version 1.2, but due to Lockheed's servers not cooperating, I haven't installed it yet.
The problem is, the FSUIPC installer sees that a copy of prepar3d is in the registry. (LM does this so that my product key is saved, even in the event of an uninstall.) Then tried to scan the LM program file, comes up short, and crashes.
This is frusrating, as I've been using the Free version of FSUIPC for a while, but I just bought a registered version, and I can't register FSUIPC if I can't run the installer, correct?