Description of problem:
after editing, saving a previously created zone failed

Version-Release number of selected component:
firewall-config-0.2.12-4.fc18

Additional info:
cmdline:        /usr/bin/python /bin/firewall-config
executable:     /bin/firewall-config
kernel:         3.8.4-202.fc18.x86_64
uid:            0
ureports_counter: 1

Truncated backtrace:
connection.py:651:call_blocking:DBusException: org.freedesktop.DBus.Python.dbus.exceptions.DBusException: INVALID_NAME: NMOSlabs server

Traceback (most recent call last):
  File "/bin/firewall-config", line 1008, in onEditZone
    self.add_edit_zone(False)
  File "/bin/firewall-config", line 1129, in add_edit_zone
    zone.rename(name)
  File "<string>", line 2, in rename
  File "/usr/lib/python2.7/site-packages/slip/dbus/polkit.py", line 141, in _enable_proxy
    return func(*p, **k)
  File "/usr/lib/python2.7/site-packages/firewall/client.py", line 186, in rename
    self.fw_zone.rename(name)
  File "/usr/lib/python2.7/site-packages/slip/dbus/proxies.py", line 50, in __call__
    return dbus.proxies._ProxyMethod.__call__(self, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python2.7/site-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Python.dbus.exceptions.DBusException: INVALID_NAME: NMOSlabs server

Local variables in innermost frame:
byte_arrays: False
self: <dbus._dbus.SystemBus (system) at 0x2b35b90>
args: ('NMOSlabs server',)
object_path: '/org/fedoraproject/FirewallD1/config/zone/3'
signature: u's'
bus_name: dbus.UTF8String(':1.1')
get_args_opts: {'byte_arrays': False, 'utf8_strings': False}
timeout: 2147483.647
kwargs: {}
dbus_interface: 'org.fedoraproject.FirewallD1.config.zone'
message: <dbus.lowlevel.MethodCallMessage path: /org/fedoraproject/FirewallD1/config/zone/3, iface: org.fedoraproject.FirewallD1.config.zone, member: rename dest: :1.1>
method: 'rename'