If i build yelp-xsl with a non-utf8 locale then it fails to build with this message:

Error: Could not merge translations:
'ascii' codec can't encode character u'\xa9' in position 48: ordinal not in range(128)

This is because of some invalid translations.  This made it build:

diff --git a/po/el.po b/po/el.po
index 9160ac7..69ec27e 100644
--- a/po/el.po
+++ b/po/el.po
@@ -211,10 +211,6 @@ msgstr "Σημείωση"
 #: yelp-xsl.xml.in:224(msg/msgstr)
 msgid "Other Credits"
 msgstr ""
-"Ελληνική μεταφραστική ομάδα GNOME\n"
-"Θάνος Τρυφωνίδης <tomtryf@gmail.com>\n"
-"\n"
-"Για περισσότερα δείτε http://www.gnome.gr/"
 
 #. Revision status of a document or page. Content was once current,
 #. but needs to be updated to reflect software updates.
diff --git a/po/te.po b/po/te.po
index 06f1ead..d588e07 100644
--- a/po/te.po
+++ b/po/te.po
@@ -211,7 +211,7 @@ msgstr "చీటి"
 #.
 #: yelp-xsl.xml.in:224(msg/msgstr)
 msgid "Other Credits"
-msgstr "ఇతర పరపతులు"
+msgstr ""
 
 #. Revision status of a document or page. Content was once current,
 #. but needs to be updated to reflect software updates.
@@ -440,7 +440,7 @@ msgstr "<comment.name/> నుండి "
 #.
 #: yelp-xsl.xml.in:470(msg/msgstr)
 msgid "© <copyright.years/> <copyright.name/>"
-msgstr "© <కాపీ రైటు.సంవత్సరములు/> <కాపీరైటు.పే/>"
+msgstr ""
 
 #. ID: email.tooltip
 #. This is a format message used to format tooltips on mailto: links.