I had problem getting this working. Here is my solution.
I had old translation files in the plugin directory (/wp-content/plugins/bbpress/bbp-languages/). bbPress was using theses instead of those in the good directory(/wp-content/languages/bbpress/). Remove files from the plugin folder, since the good place to put them is in the language folder(/wp-content/languages/bbpress/).
Thx. It’s what I was looking for.
I was confused because I didn’t found any bbpress theme to “install” and test.
