[Localization] Strange errormessqge during translation

[Urso Wieske]

Hi guys

We are getting the following errormessage when trYing to translate in
Read-activity.po. The eleventh word/entry.

Gettext validation error: 'msgstr' is not a valid Python format
string, unlike 'msgid'. Reason: In the directive number 1, the
character 'n' is not a valid conversion specifier.
Can someone help me with is message!

Thanks
Urso Wieske