On Jun 22, 2012, at 8:09 AM, David Carlson <carlson.dl at sbcglobal.net> wrote: > Gentlemen, > > What would Releases 2.4.10 and previous do if they encounter an unfamiliar format? Do they throw an error that the file needs an updated program? > > The answer may help your decision. Yes, exactly. That's Geert's point. Regards, John Ralls