OpenSuse 10.1: failure during "Initializing catalogs"

Hi, Downloaded the 10.1-mini ISO today, booted and selected http://ftp-1.gwdg.de/pub/opensuse/distribution/SL-10.1/inst-source/ as the HTTP source for installation. I selected "use additional package repositories". An error message showed up but not for enough time so that I could read it during the "Initializing catalogs" screen and after that the error dialog box showed up. It would be useful to know whether the "additional repositories" setting could have caused this. MD5SUM of the ISO is ok, fwiw. Cheers, Bogdan