Cannot download client/ cannot start game

when i try to download client, it says that im missing the nmcogame.dll and i scan to repair all my files in my computer like 3 times and it still doesn't work.

after i finish extracting the setup files, when i clicked on the game, it says something like we are unable to connect to the login server due to a server check, a firewall block or other network issues.
(btw i use parallels on mac)

Download the Non-hamachi cilent? o_o