My Book Live FTP?

By default the VFSTPD FTP server in the MBL allows one connection from an IP address. You need to change this to allow two connections from the same IP address.

Enable SSH if you’re not already done so.  Access the Linux shell and change max_per_ip=1 to read max_per_ip=2 in file /etc/vsftpd.conf``.  Restart the FTP server by using /etc/init.d/vsftpd restart` command. That should cure that one provlem.