I can't reproduce this - please give a few more details:
1. Are you running virt-manager on a remote node? What exact, full connection url is it using?
2. How far into the creation of the VM did it get?
3. What exact options did you use for creating the VM?
If you 'sudo stop libvirt-bin; sudo start libvirt-bin' does VM creation succeed after that?
I can't reproduce this - please give a few more details:
1. Are you running virt-manager on a remote node? What exact, full connection url is it using?
2. How far into the creation of the VM did it get?
3. What exact options did you use for creating the VM?
If you 'sudo stop libvirt-bin; sudo start libvirt-bin' does VM creation succeed after that?