Kupfer preferences window does not launch with broken desktop files

[donatello]

I upgraded my Ubuntu from 12.04 to 12.10 recently. After the upgrade, Kupfer works normally for launching applications. However, if I try to open the Kupfer Preferences, nothing happens.

If it helps, I use the Xmonad window manager under Gnome.

When I open Kupfer from the command line with "kupfer --debug", when I try to open Preferences, I see the following Python stack trace in the terminal:

...
[kupfer.ui.browser] WindowController: Trying to register <Primary>grave to spawn kupfer.. success
D [kupfer.ui.session] SessionClient: Connected to session as client /org/gnome/SessionManager/Client15
D [kupfer.ui.browser] WindowController: finished lazy_setup
Traceback (most recent call last):
  File "/usr/share/kupfer/kupfer/ui/browser.py", line 1942, in mitem_handler
    callback(ui_ctx)
  File "/usr/share/kupfer/kupfer/kupferui.py", line 62, in show_preferences
    win = preferences.GetPreferencesWindowController()
  File "/usr/share/kupfer/kupfer/ui/preferences.py", line 880, in GetPreferencesWindowController
    _preferences_window = PreferencesWindowController()
  File "/usr/share/kupfer/kupfer/ui/preferences.py", line 99, in __init__
    checkautostart.set_active(self._get_should_autostart())
  File "/usr/share/kupfer/kupfer/ui/preferences.py", line 273, in _get_should_autostart
    dfile = desktop.DesktopEntry(autostart_file)
  File "/usr/lib/python2.7/dist-packages/xdg/DesktopEntry.py", line 25, in __init__
    self.parse(filename)
  File "/usr/lib/python2.7/dist-packages/xdg/DesktopEntry.py", line 33, in parse
    IniFile.parse(self, file, ["Desktop Entry", "KDE Desktop Entry"])
  File "/usr/lib/python2.7/dist-packages/xdg/IniFile.py", line 75, in parse
    raise ParsingError("Parsing error on key, group missing", filename)
xdg.Exceptions.ParsingError: ParsingError in file '/home/aditya/.config/autostart/kupfer.desktop', Parsing error on key, group missing
[kupfer.core.sources] PeriodicRescanner: Starting new campaign, interval 3 s
D [kupfer.plugin.trash] TrashSource: Loaded 1 items
D [kupfer.plugin.documents] RecentsSource: Loaded 34 items
...

[donatello (aditya.mmy)]

I just fixed the problem by manually deleting - /home/aditya/.config/autostart/kupfer.desktop

[Karol Będkowski (karol-bedkowski)]

Thanks for information.
Although this problem is outside Kupfer, it shouldn't crash in this situation.
Attached patch solve this problem.