Trouble with pkg_add

[Rik <rikb_(_at_)_corihemazoo_(_dot_)_org>]

I have two (2) current boxes and both are current as of Oct 2.  One is 
fine the other is having problems with pkg_add.

Here is the error message

Can't locate object method "add_size" via package 
"OpenBSD::PackingElement::FDESC" at 
/usr/libdata/perl5/OpenBSD/PackingElement.pm line 545, <$fh> line 8.

I have tried a couple of system rebuilds to no avail.  I downloaded the 
source tree again and tried building the pkg_add stuff out of that but I 
still get the same error.

I have been searching with google but can't seem to get the correct 
search phrase to kick out something that seems useful.

Rik