Well, "1.Restart your computer and try renaming them back.", this doesn't make any sense.... lol, wuz the bussiness with your own computer? For resolving this problem, you should only login to your ftp, change the directory PS as the name you have changed, for example: default is /shop/, you changed it to /hello/, then you just found it can't be changed back to /shop/ anymore. WTF ah? Let do it as follow: 1, login the FTP and change the directory PS to hello 2, change your URL in your IE or Firefox from http://yourdomain.com/shop/adminxx to http://yourdomain.com/hello/adminx 3, then, change the directory PS back to /shop/ 4, login the FTP again and change the directory PS to shop. Done, You are welcome at first ^^