Endless online server help.!!!!!!!!!!!!!!!!!!!!!!!!!… PLEASE<3?

I just downloaded Endless online again, because I was excited the server was back up. When I went to change the server from 72.232.135.114 to game.endless-online.com an error message came up and it said exactly "cannot create file ./ config.setup.ini. and the top of the box (where the exit button is located. d: it says "configuration. Anybody have a clue what to do? I have not the slightest. Please help. :D