>>The problem seems to be localized to the latest build, so we need to figure out what exactly went wrong with it.
When is the data created? If it's created by a user in programdata, AFAICS only that user will have write access if you've used the default settings. Perhaps the tester only used one login before now.
I'm still wondering why you'd want a database to be hidden away in programdata on one machine where it seems likely to be immune to regular backups etc. Seems to me that sort of location is better for program settings/parameters/preferences etc than for what a VFPer thinks of as data. What sort of data is it?
"... 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