Quicklists editor crashed when no desktop file

Distribution: Ubuntu 12.04 precise
Application: Ubuntu Tweak 0.7.0-1~precise4
Desktop:ubuntu-2d

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/main.py", line 497, in _load_module
    page = module()
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/admins/quicklists.py", line 230, in __init__
    self.update_launch_icon_model()
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/common/debug.py", line 184, in func_wrapper
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/admins/quicklists.py", line 247, in update_launch_icon_model
    entry = NewDesktopEntry(path)
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/admins/quicklists.py", line 75, in __init__
    DesktopEntry.__init__(self, filename)
  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 35, in parse
    raise ParsingError("File not found", filename)
ParsingError: ParsingError in file '/usr/share/applications/', File not found