I tried the latest dev stream, and continued to have the problem. The quick fix is to simply touch the target file before launching 'virt-clone' touch <dir_to_VMs>/newvm.img virt-clone -o existing_vm -n new_vm -o <dir_to_VMs>/newvm.img Cheers! -- View this message in context: http://www.nabble.com/virt-clone-Fedora-8-Xen3.1-...-ERROR%3A-Disk-size-must-be-an-int-or-a-float.-tp15366676p15434469.html Sent from the Fedora Xen mailing list archive at Nabble.com. -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen