It's not an error, it's just a "Division" selection... you can choose either division 1, or division 2: (each division has diff servers)
Just click on either or (w/e server you're looking for) and just wait for the start key to appear
it'd be nice if you installed the english pk2 files to the media.pk2 ...you can do that here, it gives you steps to properly install it:
http://c-sro.com/wiki/index.php/Pk2