This has newly started, so I am presuming that it is perhaps related to some recently updated package on F8 in say the last week or so. I have a WindowsXP DomU that when I try to start from virt-manager gives the following error: Error starting domain: virDomainCreate() failed POST operation failed: (xend.err 'int argument required') Details shows: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/engine.py", line 472, in run_domain vm.startup() File "/usr/share/virt-manager/virtManager/domain.py", line 379, in startup self.vm.create() File "/usr/lib/python2.5/site-packages/libvirt.py", line 240, in create if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) libvirtError: virDomainCreate() failed POST operation failed: (xend.err 'int argument required') I have no idea what other information to supply or where to particularly find it since this has generally "just worked" for the occasional running of a Windows instance that I have needed for the last several months. Thanks for any help, --Rob -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen