YOU on SuSE 9.0 fails

Hi, FIrst of all, I have two Three SuSE 9.0 machines that are running fine! I just tried to install it on a slightly old AMD-K5 based machine, and everything works fine (so far) except when I try to run YOU to get it upto date. No matter which of the servers I try, it always fails in the same way. ERROR Signature check for patch info files failed. Cannot load patch information Patch: xf86tools-44811 Anyone had similar problems ? Peter