If field name is correct than I would suspect DBC corruption as well.

>
>=DbGetProp(cFieldName, "Field", "Caption")
>flushes error :
>'Function argument value, type, or count is invalid'
>
>Database is set,
>Field name is valid (checked in debugger)
>
>Strange thing that it happen only on one table in database.
>
>Can it be database corruption ? (An old Tastrade.dbc)