+++ This bug was initially created as a clone of Bug #927434 +++

Version-Release number of selected component:
gnome-abrt-0.2.9-1.fc18

Additional info:
cmdline:        python /usr/bin/gnome-abrt
dso_list:       pygobject3-base-3.4.2-6.fc18.i686
executable:     /usr/bin/gnome-abrt
kernel:         3.8.4-202.fc18.i686
uid:            1000
ureports_counter: 1

Truncated backtrace:
views.py:255:_reload_problems:AttributeError: 'NoneType' object has no attribute 'get_iter_first'

Traceback (most recent call last):
  File "/usr/bin/gnome-abrt", line 243, in <module>
    exit_code = app.run(app_cmdline)
  File "/usr/lib/python2.7/site-packages/gi/types.py", line 47, in function
    return info.invoke(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/gnome_abrt/controller.py", line 61, in <lambda>
    signal.signal(signal.SIGCHLD, lambda signum, frame: self._handle_signal(signum))
  File "/usr/lib/python2.7/site-packages/gnome_abrt/controller.py", line 37, in _handle_signal
    self.source.refresh()
  File "/usr/lib/python2.7/site-packages/gnome_abrt/problems.py", line 266, in refresh
    self.notify()
  File "/usr/lib/python2.7/site-packages/gnome_abrt/problems.py", line 255, in notify
    super(MultipleSources, self).notify(change_type, problem)
  File "/usr/lib/python2.7/site-packages/gnome_abrt/problems.py", line 60, in notify
    observer.changed(self, change_type, problem)
  File "/usr/lib/python2.7/site-packages/gnome_abrt/views.py", line 121, in changed
    self.wnd._reload_problems(source)
  File "/usr/lib/python2.7/site-packages/gnome_abrt/views.py", line 255, in _reload_problems
    self._select_problem_iter(self.tv_problems.get_model().get_iter_first())
AttributeError: 'NoneType' object has no attribute 'get_iter_first'

Local variables in innermost frame:
p: <gnome_abrt.problems.Problem instance at 0x8c8f02c>
old: None
problems: [<gnome_abrt.problems.Problem instance at 0x8c8f02c>]
self: <OopsWindow object at 0x8ae4194 (gnome_abrt+views+OopsWindow at 0x8b3c008)>
source: <gnome_abrt.problems.MultipleSources object at 0x8ae0e8c>

--- Additional comment from Luis Mendes on 2013-03-25 22:49:35 CET ---

Created attachment 716222 [details]
File: backtrace

--- Additional comment from Luis Mendes on 2013-03-25 22:49:38 CET ---

Created attachment 716223 [details]
File: core_backtrace

--- Additional comment from Luis Mendes on 2013-03-25 22:49:41 CET ---

Created attachment 716224 [details]
File: environ

--- Additional comment from Jakub Filak on 2013-03-26 09:08:30 CET ---

Thank you for the report.

Fixed in upstream git:

commit b32d423a998db5db45b4569a77f50a45e9cfec3d
Author: Jakub Filak <jfilak>
Date:   Mon Mar 25 17:20:17 2013 +0100

    Use IOChannel approach in order to make signal handling synchronous
    
    - closes #17
    
    Signed-off-by: Jakub Filak <jfilak>
    Signed-off-by: Michal Toman <mtoman>