Mozilla dying in 2.8 upgrade

[Jesse Sheidlower]

Yesterday, having successfully upgraded my system to 5.3-STABLE, I
set the 2.8 upgrade running, watched it for a few hours, and then
left my office. It was with great sorrow that I saw this morning
that it had made it through 66 of 69 packages, but died on 
Mozilla, with this error:

---

if [ ! -L /usr/X11R6/lib/browser_plugins/libjavaplugin_oji.so ]; then  for jpi in /usr/local/jdk1.4.2/jre/plugin/i386/ns610/libjavaplugin_oji.so  /usr/local/jdk1.4.1/jre/plugin/i386/ns610/libjavaplugin_oji.so  /usr/local/diablo-jdk1.3.1/jre/plugin/i386/ns600/libjavaplugin_oji.so  /usr/local/jdk1.3.1/jre/plugin/i386/ns600/libjavaplugin_oji.so; do  if [ -f ${jpi} ]; then  echo lib/browser_plugins/libjavaplugin_oji.so >> /usr/ports/www/mozilla/work/pkg-plist ;  break;  fi;  done;  echo @dirrm lib/browser_plugins >> /usr/ports/www/mozilla/work/pkg-plist ;  fi
echo lib/mozilla/mozilla >> /usr/ports/www/mozilla/work/pkg-plist
echo lib/mozilla/mozilla-config >> /usr/ports/www/mozilla/work/pkg-plist
cp: /usr/ports/www/mozilla/work/mozilla/dist/bin/defaults/isp: No such file or directory
*** Error code 1

Stop in /usr/ports/www/mozilla.
*** Error code 1

Stop in /usr/ports/www/mozilla.
** Command failed [exit code 1]: /usr/bin/script -qa /tmp/portupgrade25909.1 make BATCH=yes -m GNOME_UPGRADE_SH_VER=280 -DFORCE_PKG_REGISTER reinstall
egrep: /var/db/pkg/mozilla-1.7.2_5,2/+CONTENTS: No such file or directory
--->  Restoring the old version

[...]

---

I haven't seen this before, and can't find anything relevant on Google. Any
suggestions for how to fix this?

And, when I'm done, can I just upgrade mozilla, mplayerplug-in, and
epiphany, and be good to go, or do I really have to run the entire
gnome-upgrade.sh again? (Things are otherwise OK, I get the 2.8 splash
screen, etc.)

Thanks.

Jesse Sheidlower