Version-Release number of selected component:
pitivi-0.94-4.fc22

Additional info:
reporter:       libreport-2.6.2
cmdline:        python3 /usr/bin/pitivi
executable:     /usr/bin/pitivi
kernel:         4.1.8-200.fc22.x86_64
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
widgets.py:604:resetKeyframeToggleButtons:AttributeError: 'NoneType' object has no attribute 'get_children'

Traceback (most recent call last):
  File "/usr/lib64/python3.4/site-packages/pitivi/clipproperties.py", line 514, in _treeviewSelectionChangedCb
    self._updateEffectConfigUi()
  File "/usr/lib64/python3.4/site-packages/pitivi/clipproperties.py", line 527, in _updateEffectConfigUi
    self._removeEffectConfigurationWidget()
  File "/usr/lib64/python3.4/site-packages/pitivi/clipproperties.py", line 536, in _removeEffectConfigurationWidget
    element_settings_widget.resetKeyframeToggleButtons()
  File "/usr/lib64/python3.4/site-packages/pitivi/utils/widgets.py", line 604, in resetKeyframeToggleButtons
    for track_element in effect.get_parent().get_children(False):
AttributeError: 'NoneType' object has no attribute 'get_children'

Local variables in innermost frame:
effect: <Effect object at 0x7f25c4042288 (GESEffect at 0x28957e0)>
widget: None
togglebutton: <ToggleButton object at 0x7f25c4042dc8 (GtkToggleButton at 0x3b23340)>
self: <GstElementSettingsWidget object at 0x7f25a4033438 (pitivi+utils+widgets+GstElementSettingsWidget at 0x41c9a50)>