Il est impossible de configurer les sous menus préférences et administration
à partir de alacarte. Ces sous menus n'apparaissent pas. Il y a uniquement le
menu application.

I appear to have the same problem...  the properties button does not
function

Running alacarte from the command line yields the following results when
pressing the properties button...

Traceback (most recent call last):
  File "/usr/share/alacarte/Alacarte/MainWindow.py", line 470, in
on_properties_button_clicked
    self.on_edit_properties_activate(None)
  File "/usr/share/alacarte/Alacarte/MainWindow.py", line 339, in
on_edit_properties_activate
    process = subprocess.Popen(['gnome-desktop-item-edit', file_path],
env=os.environ)
  File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1259, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

I hope this is of some use.

alacarte version is 3.5.3-1
running debian testing/unstable on amd64
kernel 3.7.8-1-experimental

Regards

Harry