ftp in Fedora Core 10, 500 OOPS: cannot change directory: /root

[bghayad]

Hi All;

I did yum install vsftpd and then I configured the ftp using the files:
/etc/vsftpd/vsftpd.conf
/etc/vsftp/user_list
/etc/vsftpd/ftpusers

Then I ran it using sudo /etc/init.d/vsftpd start

Now, when I try to login from my labtop to the ftp server then I have the below:

Connected to 213.145.150.61.
220 (vsFTPd 2.0.7)
User (213.145.150.61none)): root
331 Please specify the password.
Password:
500 OOPS: cannot change directory:/root
Login failed.
ftp> bye

What is the 500 OOPS: cannot change directory:/root?
Regards
Bilal