I got it working. If anyone happends to have the same question here is my solution:
This solution is for the bbPress Plugin version.
1. Got to “https://translate.wordpress.org/projects/bbpress/plugin/nl/default”.
2. Log in
3. Export the .mo file at the bottom and download it.
4. Place it in the following dir “/wp-content/languages/bbpress/”.
5. Rename is to “bbpress-nl_NL.mo”.
6. Make sure you have filled the correct languages in your wp-config.php: ‘nl_NL’.
If there is an easier way feel free to leave a comment.
Tobias.
