package catalogue not found in cd installation error

Hello all. I tried installing opensuse 10.1 through isos downloaded from ftp.gwdg.de. The installation proceeds normally in the first few steps, but I keep getting the same error of the package catalogue not found in cd.... I can thus not make any package selection and cannot install 10.1 . Which is the package catalogue and from where can I download one in order to incorporate it in the cd1 iso??? I had exactly the same problem when I tried to do an ftp install through gwdg.de Any helpful advice welcome