all other answers in the forum didn't work out, so i'll post a new topic.
What I've already done:
1.) I set up a silverstripe yesterday and i can't set the frontend language to germany.
(the backend works in german language, because i set up 'german' in the profile area)
2.) I added a line
to the _config.php in /mysite/
take a look here:
the problem is:
A part of the site shows up in german (for example 'Geben Sie einen Kommentar ab' in german instead of 'Give your comment' in english), but all other parts are still english, for example 'your comment' and 'posted by', also 'go to ...' instead of the german 'gehe zu' when you click on a button.
The right translations are inside the de_DE.php file, so this doesn't seem to be the problem.
what can i do? Thanks for your help.