Description of problem:
I was trying to reload the firewal to change the runtime configuration to the persistant configuration.  It happens just about every time, and the runtime configuration does not update.

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

Additional info:
cmdline:        /usr/bin/python /usr/bin/firewall-config
executable:     /usr/bin/firewall-config
kernel:         3.6.10-4.fc18.x86_64
uid:            1000
ureports_counter: 1

Truncated backtrace:
connection.py:651:call_blocking:DBusException: org.freedesktop.DBus.Python.dbus.exceptions.DBusException: COMMAND_FAILED: '/sbin/iptables -A ACCEPT_allow -t filter -m udp -p udp --dport 137 -m conntrack --ctstate NEW -j ACCEPT' failed: iptables: No chain/target/match by that name.

Traceback (most recent call last):
  File "/usr/bin/firewall-config", line 676, in service_toggle_cb
    self.fw.addService(active_zone, name)
  File "<string>", line 2, in addService
  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 732, in addService
    return dbus_to_python(self.fw_zone.addService(zone, service, timeout))
  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: COMMAND_FAILED: '/sbin/iptables -A ACCEPT_allow -t filter -m udp -p udp --dport 137 -m conntrack --ctstate NEW -j ACCEPT' failed: iptables: No chain/target/match by that name.

Local variables in innermost frame:
byte_arrays: False
self: <dbus._dbus.SystemBus (system) at 0x1789b30>
args: ('home', 'samba', 0)
object_path: '/org/fedoraproject/FirewallD1'
signature: u'ssi'
bus_name: dbus.UTF8String(':1.3')
get_args_opts: {'byte_arrays': False, 'utf8_strings': False}
timeout: 2147483.647
kwargs: {}
dbus_interface: 'org.fedoraproject.FirewallD1.zone'
message: <dbus.lowlevel.MethodCallMessage path: /org/fedoraproject/FirewallD1, iface: org.fedoraproject.FirewallD1.zone, member: addService dest: :1.3>
method: 'addService'