Hi, When I running make postinstall, it reports parsing error : Parsing error: parse error: Error adding class Xen_HostSystem to the repository: CIM_ERR_INVALID_SUPERCLASS: Operation cannot be carried out since the specified superclass does not exist: "CIM_ComputerSystem" Actually, CIM_ComputerSystem exist in the repository (/var/lib/Pegasus/repository/root#virt/classes), and Xen_HostSystem has been added to the repository. Of course, I have installed schema cimv216Experimental successfully. This is using xen-3.1.0-13.fc8 and libvirt-0.3.3-2.fc8. However, there is no error in RHEL 5.1 by making postinstall. Who know why? Thanks! Best, Regards Daisy Guo Lian Yun E-mail: yunguol@cn.ibm.com IBM China Development Lab, Shanghai, China TEL: (86)-21-61008057