YaST2: Problem defining a new Inst. source

Hello: I'm trying to create an installation source from YaST2 (Control Center -> Software -> Change Instalation Source) I fill in the window: Protocol: FTP Server Name: ftp.suse.com/pub/suse (I've also tried with ftp.suse.com alone to no avail) Server Directory: i386/9.0/suse/src/ Authentication: Anonimous (I've also tried without it) I accept and after a while (adding installation source...) a meessage emerges: "Couldn't create an installation source from the URL 'ftp://ftp.suse.com/pub/ suse/i386/9.0/suse/src' Details: ERROR(InstSrc:E_no_instsrc_on_media) Try again?" I've checked that the server is in "/var/lib/YaST2/you/youservers". Where should I look into? Thanks in advance.