Version-Release number of selected component:
firewall-config-0.3.11-3.fc20

Additional info:
reporter:       libreport-2.2.3
cmdline:        /usr/bin/python -Es /usr/bin/firewall-config
executable:     /usr/bin/firewall-config
kernel:         3.16.3-200.fc20.i686+PAE
runlevel:       N 5
type:           Python
uid:            1000

Truncated backtrace:
firewall-config:2061:onChangeZone:TypeError: 'NoneType' object is not iterable

Traceback (most recent call last):
  File "/usr/bin/firewall-config", line 2061, in onChangeZone
    for item in rules:
TypeError: 'NoneType' object is not iterable

Local variables in innermost frame:
masquerade: False
name: 'time-exceeded'
_services: []
default: False
_icmpblocks: []
interfaces: ['wlp6s0']
args: (<TreeSelection object at 0x8ba9554 (GtkTreeSelection at 0x8caa908)>,)
iter: None
self: <__main__.FirewallConfig object at 0x8b8b36c>
sources: []
builtin: False
icmpblocks: []
rules: None
services: ['dhcpv6-client', 'mdns', 'ssh']
selected_zone: 'public'
ports: []
forward_ports: []