Description of problem:
User logiing in to desktop

Version-Release number of selected component:
blueman-1.23-6.fc19

Additional info:
reporter:       libreport-2.1.6
cmdline:        /usr/bin/python /usr/bin/blueman-applet
executable:     /usr/bin/blueman-applet
kernel:         3.10.5-201.fc19.x86_64
runlevel:       N 5
type:           Python
uid:            1000

Truncated backtrace:
Functions.py:300:check_single_instance:TypeError: argument of type 'NoneType' is not iterable

Traceback (most recent call last):
  File "/usr/bin/blueman-applet", line 125, in <module>
    BluemanApplet()
  File "/usr/bin/blueman-applet", line 60, in __init__
    check_single_instance("blueman-applet")
  File "/usr/lib/python2.7/site-packages/blueman/Functions.py", line 300, in check_single_instance
    if not isrunning or (isrunning and id not in cmdline):
TypeError: argument of type 'NoneType' is not iterable

Local variables in innermost frame:
isrunning: True
event_time: 0
f: <open file '/proc/1894/cmdline', mode 'r' at 0x7f007771a540>
pid: 1894
id: 'blueman-applet'
cmdline: None
handler: <function handler at 0x25912a8>
lockfile: '/home/john/.cache/blueman-applet-1000'
unhide_func: None