Interesting behaviour in this.
When adding a custom class (Types tab, Classes button),
you cannot select a prg based class as it comes up with
an error "An invalid file or class was selected"
However, if you add a vcx then edit it, you can change
text to point to the prg, and it works fine.
As an aside, why does it add Home() to the path to the
class??? e.g. sesBase OF HOME()+"D:\MyFiles\MyClasses.prg"