i downloaded it many times but i still get the error
Also you should try to switch off your antivirus while running the client.
Does the auto updater (mu.exe) update your client? It should be else, download and extract the manual patch from here http://www.sendspace.com/file/93ul4n and you will be able to play.
pliz help my MuGuard
well now i can connect but when i do it says "you are disconnected from server" even thou the game is online