Since v.1.5.0 NextGEN has a new feature which can be found under Translation in the admin page of Gallery.
I downloaded the new nl_NL translation from a dutch forum, because the automatic download did not work.
After NextGEN upgrades to version 1.5.2 the all language files are gone, because the lang-directory will be renewed. But still the function in NextGEN of automatic downloading my own language file(s) does not work.
It does 'something' after pressing the button, then asks to refresh the page, but nothing happened.
Do I do something wrong or is it the download location of the language files... ?