Comment 11 for bug 462891

Work-around for this specific instance of a problem in Translations has been rolled out. There are a few other potential cases where it can fail in the same way:

$ grep -rl preferredemail/ lib/lp/*/templates
lib/lp/registry/templates/person-portlet-emails.pt
lib/lp/registry/templates/person-editpgpkeys.pt
lib/lp/registry/templates/distributionmirror-review.pt
lib/lp/registry/templates/person-index.pt
lib/lp/registry/templates/person-editemails.pt
lib/lp/registry/templates/person-rdf-contents.pt
lib/lp/translations/templates/pofile-export.pt
lib/lp/translations/templates/translations-export.pt
lib/lp/translations/templates/potemplate-export.pt