Thanks that worked.
But I think there is a bug. I tried to translate the 404.php text in Poedit.
I get this error in Poedit: A format specification for argument 1 doesn’t exist in ‘msgstr’
It’s related to this message string
#: ../404.php:20
#, php-format
msgid ""
"The page you are looking for no longer exists. Perhaps you can return back "
"to the site's homepage and see if you can find what you "
"are looking for. Or, you can try finding it by using the search form below."
msgstr ""
"Helaas, deze pagina bestaat niet. Gebruik het menu op deze pagina om te "
"vinden wat u zoekt. U kunt ook in de zoekbalk hieronder uw zoekopdracht "
"invullen. "
I think it has to do with the % symbol in there. Because there is a % symbol in 404.php we get a problem with translation?
Greetings,
Jonathan