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 eboard "s PO files:

gettext: multilang/eboard.de.po:2567: "msgid" and "msgstr" entries do not both end with "\n"
multilang/eboard.de.po:2572: "msgid" and "msgstr" entries do not both end with "\n"
msgfmt: found 2 fatal errors
gettext: multilang/eboard.fr.po:3034: missing "msgstr" section
multilang/eboard.fr.po:3034:17: syntax error
multilang/eboard.fr.po:3035: keyword "_" unknown
msgfmt: found 3 fatal errors
gettext: multilang/eboard.hu.po:3: "msgid" and "msgstr" entries do not both end with "\n"
msgfmt: found 1 fatal error
gettext: multilang/eboard.ja.po:4: "msgid" and "msgstr" entries do not both end with "\n"
multilang/eboard.ja.po:499: "msgid" and "msgstr" entries do not both end with "\n"
multilang/eboard.ja.po:539: "msgid" and "msgstr" entries do not both end with "\n"
multilang/eboard.ja.po:562: "msgid" and "msgstr" entries do not both end with "\n"
msgfmt: found 4 fatal errors
gettext: multilang/eboard.zh_CN.po:1717: "msgid" and "msgstr" entries do not both end with "\n"
msgfmt: found 1 fatal error
      

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.