Taking a better look at the localization file, I found:
Code:
"languages.pur":"Portuguese",
So, basically it was a typo, it was using
pur instead of
por to refer to Portuguese.
------
Also, maybe another bug:
1. Go to Settings and enable Lightbox
2. Go back to main page
3. Go to the recent added
4. Click on a entry. The popup should open.
5. On the popup, click on Series, Tags or Author link. The page will list all the entries from the series, tags or author.
6. You can click on any entry, but the popup will NOT show up anymore (until you refresh the page or go to the Settings page).
With Lightbox disabled, everything work as it should.