Problem with suse_register

Hi,

I have recently installed SLES 10 64bit on 3 IBM x3650 servers. Only 1 of
the servers registered correctly for updates. The other two throw this
error when trying to register (manually using suse_register or through yast)

"Mar 5 09:40:09 oranode3 suse_register[9969]: ERROR: 'SLES10-Updates' is
not a valid catalog.(21)" - taken from /var/log/messages

Can anyone shed some light on this problem?

Cheers