Portupgrade Package Question

[Thomas D. Dean]

As root, I attempted to use
  portupgrade -PPRv m4
which attempted to access 
ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-8.2-release/All/m4-1.4.16,1.tbz
but failed - File unavailable (e.g. file not found, no access)

I changed etc/pkgtools.conf 
   OS_PKGBRANCH="8-STABLE"
and
  portupgrade -PPRv m4
which attempted to access
ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-8-stable/All/m4-1.4.16,1.tbz
failed with the same message.

I can ftp either file.

I get the same error with any out-of-date port.

What am I doing wrong?

tomdean