they claimed that it would not run on any of the computers any more.Depends why "it would not run." You may find they've simply copied the app folder across to new machines without VFP runtimes or dependencies that may have been installed into the OS folders in those days.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1
