--- docutils/frontend.py.org 2012-01-06 12:49:58.815655161 +0900 +++ docutils/frontend.py 2012-01-06 13:12:55.783605996 +0900 @@ -38,7 +38,7 @@ import docutils import docutils.utils import docutils.nodes -from docutils.error_reporting import locale_encoding, ErrorOutput +from docutils.error_reporting import locale_encoding, ErrorOutput, ErrorString def store_multiple(option, opt, value, parser, *args, **kwargs):