No way to open sage Notebook

[Pierre-Yves Bienvenu]

Hi,

I use Sage 5.11 on Mac OS X.6 and until about one year ago I used to be able to open it without any trouble. Now these days I can't get the notebook to open (safari or firefox declare itself unable to opne localhost:8080). I have to use the terminal version. 

By the way when typing notebook() there, I get

EOFError                                  Traceback (most recent call last)

<ipython-input-1-3728cb3d7c7d> in <module>()

----> 1 notebook()

/Applications/Sage-5.11-OSX-64bit-10.6.app/Contents/Resources/sage/devel/sagenb/sagenb/notebook/notebook_object.pyc in __call__(self, *args, **kwds)

    221     """

    222     def __call__(self, *args, **kwds):

--> 223         return self.notebook(*args, **kwds)

    224 

    225     notebook = run_notebook.notebook_run

/Applications/Sage-5.11-OSX-64bit-10.6.app/Contents/Resources/sage/devel/sagenb/sagenb/notebook/run_notebook.pyc in notebook_run(self, directory, port, interface, port_tries, secure, reset, accounts, openid, server_pool, ulimit, timeout, upload, automatic_login, start_path, fork, quiet, server, profile, subnets, require_login, open_viewer, address)

    526     # if none use defaults

    527 

--> 528     nb = notebook.load_notebook(directory)

    529 

    530     directory = nb._dir

/Applications/Sage-5.11-OSX-64bit-10.6.app/Contents/Resources/sage/devel/sagenb/sagenb/notebook/notebook.pyc in load_notebook(dir, interface, port, secure, user_manager)

   1795 

   1796     dir = make_path_relative(dir)

-> 1797     nb = Notebook(dir)

   1798     nb.interface = interface

   1799     nb.port = port

/Applications/Sage-5.11-OSX-64bit-10.6.app/Contents/Resources/sage/devel/sagenb/sagenb/notebook/notebook.pyc in __init__(self, dir, user_manager)

    148         # Set the list of users

    149         try:

--> 150             S.load_users(self._user_manager)

    151         except IOError:

    152             pass

/Applications/Sage-5.11-OSX-64bit-10.6.app/Contents/Resources/sage/devel/sagenb/sagenb/storage/filesystem_storage.pyc in load_users(self, user_manager)

    265             {'admin': admin, 'wstein': wstein}

    266         """

--> 267         for user in self._basic_to_users(self._load('users.pickle')).itervalues():

    268             user_manager.add_user_object(user, force=True)

    269             user_manager.set_password(user.username(), user.password(), encrypt = False)

/Applications/Sage-5.11-OSX-64bit-10.6.app/Contents/Resources/sage/devel/sagenb/sagenb/storage/filesystem_storage.pyc in _load(self, filename)

    165     def _load(self, filename):

    166         with open(self._abspath(filename)) as f:

--> 167             result = cPickle.load(f)

    168         return result

    169 

EOFError: 

Is there any way to fix it? 

Thanks for your help!

[Volker Braun]

Delete the corrupted users.pickle:

rm ~/.sage/sage_notebook.sagenb/users.pickle

will erase any sagenb users, obviously.