Version-Release number of selected component:
firewall-config-0.3.8-1.fc19

Additional info:
reporter:       libreport-2.1.9
cmdline:        /usr/bin/python /usr/bin/firewall-config
executable:     /usr/bin/firewall-config
kernel:         3.11.7-200.fc19.x86_64
runlevel:       N 5
type:           Python
uid:            1000

Truncated backtrace:
firewall-config:1826:onChangeZone:TypeError: 'NoneType' object has no attribute '__getitem__'

Traceback (most recent call last):
  File "/usr/bin/firewall-config", line 1826, in onChangeZone
    _services = services[:]
TypeError: 'NoneType' object has no attribute '__getitem__'

Local variables in innermost frame:
masquerade: False
default: False
interfaces: ['wlp0s19f2u1']
args: (<TreeSelection object at 0x3172b40 (GtkTreeSelection at 0x2e31320)>,)
self: <__main__.FirewallConfig object at 0x2cc1050>
sources: []
builtin: False
icmpblocks: []
rules: []
services: None
active_zone: 'public'
ports: []
forward_ports: []

Potential duplicate: bug 1036290