As reported here: http://groups.google.com/group/django-users/msg/845d2a8899bbb57c
The failing line of code in the dpaste traceback is:
File "/home/rime/www/tammeoue/packages/django/contrib/admin/options.py" in save_change
431. msg = _('The %(name)s "%(obj)s" was changed successfully.') % {'name': force_unicode(opts.verbose_name), 'obj': new_object}
This is similar to #7992/#8016 -- some code that moved from django/contrib/admin/views/main.py in old admin to django/contrib/admin/options.py in newforms-admin was missed when the Unicode changes were merged from trunk to newforms-admin. The corresponding line of code in pre-NFA (http://code.djangoproject.com/browser/django/tags/notable_moments/pre-newforms-admin/django/contrib/admin/views/main.py#L354) is:
msg = _('The %(name)s "%(obj)s" was changed successfully.') % {'name': force_unicode(opts.verbose_name), 'obj': force_unicode(new_object)}
That is, there is a force_unicode around the new_object as well as opts.verbose_name. It's probably worth a closer look to see if any other places have been missed; I'll do this when I get a chance but don't wait on me to fix it if someone else gets to it first.
