[Bug 1678420] Re: gnome-tweak-tool cannot start on ubuntu budgie 17.04

[Jeremy Bicha]

** Changed in: gnome-tweak-tool (Ubuntu)
   Importance: Undecided => High

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Title:
  gnome-tweak-tool cannot start on ubuntu budgie 17.04

Status in Ubuntu Budgie:
  Triaged
Status in gnome-tweak-tool package in Ubuntu:
  In Progress

Bug description:
  atc at ATC:~$ gnome-tweak-tool
  WARNING : Shell not installed or running
  atc at ATC:~$ sudo gnome-tweak-tool
  WARNING : Shell not installed or running

  gnome-tweak-tool version 3.24

  
  more addition:
  i had installed freshly just before this fresh install, it working smoothly but i haven't check the version of gnome-tweak-tool at that time, so maybe it's a new version bug? or something else i did wrong at this time? 

  
  more info:
  WARNING : Shell not installed or running
  WARNING : Error detecting shell
  Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/gtweak/tweaks/tweak_group_shell_extensions.py", line 279, in __init__
  raise Exception("Shell not running or DBus service not available")
  Exception: Shell not running or DBus service not available
  Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/gtweak/app.py", line 41, in do_activate
  self.win = Window(self, model)
  File "/usr/lib/python2.7/dist-packages/gtweak/tweakview.py", line 58, in __init__
  self._model.load_tweaks(self)
  File "/usr/lib/python2.7/dist-packages/gtweak/tweakmodel.py", line 126, in load_tweaks
  mods = __import__("gtweak.tweaks", globals(), locals(), tweak_files, 0)
  File "/usr/lib/python2.7/dist-packages/gtweak/tweaks/tweak_group_shell_extensions.py", line 335, in <module>
  ShellExtensionTweakGroup(),
  File "/usr/lib/python2.7/dist-packages/gtweak/tweaks/tweak_group_shell_extensions.py", line 309, in __init__
  shell._settings.bind("disable-user-extensions", self.titlebar_widget,
  AttributeError: 'NoneType' object has no attribute '_settings'

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