You can check if a PO file is valid with the following command:

        msgfmt -c -o /dev/null <po file>
      

The following errors were found in blender 's PO files:

gettext: locale/po/ur.po:51842: 'msgid' and 'msgstr' entries do not both begin with '\n'
locale/po/ur.po:89573: 'msgid' and 'msgstr' entries do not both begin with '\n'
locale/po/ur.po:127780: 'msgid' and 'msgstr' entries do not both begin with '\n'
locale/po/ur.po:133104: 'msgid' and 'msgstr' entries do not both begin with '\n'
locale/po/ur.po:133124: 'msgid' and 'msgstr' entries do not both begin with '\n'
locale/po/ur.po:133695: 'msgid' and 'msgstr' entries do not both begin with '\n'
locale/po/ur.po:136337: 'msgid' and 'msgstr' entries do not both begin with '\n'
msgfmt: found 7 fatal errors
gettext: locale/po/zh_HANS.po: can't guess language
gettext: locale/po/zh_HANT.po: can't guess language
      

Please ask the translator (identified by the Last-Translator field in the PO file), the language team (identified by the Language-Team field) or debian-i18n for a fix.