i am trying to do a portupgrade and after it running for 7 hrs and not doing anything it quits with this error message.

black-buity# portupgrade -aRrcCv

---> Reading default options: -v -D -l /var/tmp/portupgrade.results -L /var/tmp/portupgrade-%s::%s.log ---> Session started at: Sat, 15 Jan 2005 12:07:25 -0800 [Updating the pkgdb <format:bdb1_btree> in /var/db/pkg ... - 110 packages found (-0 +23) ....................... done] ---> Session ended at: Sat, 15 Jan 2005 19:13:25 -0800 (consumed 07:05:59) /usr/local/lib/ruby/site_ruby/1.8/pkgdb.rb:323:in `deorigin': cannot convert nil into String (PkgDB::DBError) from /usr/local/lib/ruby/site_ruby/1.8/pkgdb.rb:916:in `tsort_build' from /usr/local/lib/ruby/site_ruby/1.8/pkgdb.rb:915:in `each' from /usr/local/lib/ruby/site_ruby/1.8/pkgdb.rb:915:in `tsort_build' from /usr/local/lib/ruby/site_ruby/1.8/pkgdb.rb:907:in `each' from /usr/local/lib/ruby/site_ruby/1.8/pkgdb.rb:907:in `tsort_build' from /usr/local/lib/ruby/site_ruby/1.8/pkgdb.rb:929:in `sort_build' from /usr/local/lib/ruby/site_ruby/1.8/pkgdb.rb:933:in `sort_build!' from /usr/local/sbin/portupgrade:674:in `main' from /usr/local/sbin/portupgrade:207:in `initialize' from /usr/local/sbin/portupgrade:207:in `new' from /usr/local/sbin/portupgrade:207:in `main' from /usr/local/sbin/portupgrade:1845 black-buity#

black-buity# ruby --version ruby 1.8.2 (2004-07-29) [i386-freebsd5] black-buity# uname -a FreeBSD black-buity.vampextream.com 5.3-RELEASE FreeBSD 5.3-RELEASE #0: Fri Dec 10 14:50:33 PST 2004 ro...@black-buity.vampextream.com:/usr/src/sys/i386/compile/VAMPEXTREAM i386 black-buity#

i have read UPDATEING and didnt find any thing on 1.8 just updateing ruby from 1.6 to 1.8 .. so my quistions are

1. what would be causeing this?? 2. how do i fix this?

and thanks inadvance for any help on this issue/ error message