There seems to be a little spelling mistake in the Dutch translation of Enfold. I corrected the mistake in the Dutch .po file and uploaded it to my server. But the mistake continues to display. Perhaps it’s cached somewhere? I cleared all browser cache, but that didn’t work.
You also need to generate the mo file. You can use PoEdit ( http://www.poedit.net/ ) to generate it. Open up the po file and hit the save button. Poedit should now generate two files, a mo file and a po file. Upload both files into the enfold/lang folder.