>>They both are using Windows Installer, I guess.
>
>Yes, but I'm still curious to know why this is included in the installation of VFP.

Me too! Maybe NAV was inappropriately [re]configured or disabled. The lone NAV component theory: A free standing NAV scan component is spying the registry, spots a prospect and then makes a call to S32NAV who is missing either logically or physically. Setup is through the VFP 6 setup wizard. I do not know who sent the message either. It could have been setup, it could have been the windows registry service. It could have been NAV:-|