Salve a tutti, dopo aver configurato tutto secondo la guida, quando invio una mail ottengo il seguente errore

Traceback (most recent call last):
  File "/home/athena/seedoo/OCB/openerp/http.py", line 546, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/athena/seedoo/OCB/openerp/http.py", line 583, in dispatch
    result = self._call_function(**self.params)
  File "/home/athena/seedoo/OCB/openerp/http.py", line 319, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/athena/seedoo/OCB/openerp/service/model.py", line 118, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/athena/seedoo/OCB/openerp/http.py", line 316, in checked_call
    return self.endpoint(*a, **kw)
  File "/home/athena/seedoo/OCB/openerp/http.py", line 812, in __call__
    return self.method(*args, **kw)
  File "/home/athena/seedoo/OCB/openerp/http.py", line 412, in response_wrap
    response = f(*args, **kw)
  File "/home/athena/seedoo/OCB/addons/web/controllers/main.py", line 948, in call_button
    action = self._call_kw(model, method, args, {})
  File "/home/athena/seedoo/OCB/addons/web/controllers/main.py", line 936, in _call_kw
    return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)
  File "/home/athena/seedoo/OCB/openerp/api.py", line 268, in wrapper
    return old_api(self, *args, **kwargs)
  File "/home/athena/seedoo/OCB/addons/sale/sale.py", line 1275, in send_mail
    return super(mail_compose_message, self).send_mail(cr, uid, ids, context=context)
  File "/home/athena/seedoo/OCB/openerp/api.py", line 268, in wrapper
    return old_api(self, *args, **kwargs)
  File "/home/athena/seedoo/OCB/openerp/api.py", line 399, in old_api
    result = method(recs, *args, **kwargs)
  File "/home/athena/seedoo/OCB/addons/account/account_invoice.py", line 1689, in send_mail
    return super(mail_compose_message, self).send_mail()
  File "/home/athena/seedoo/OCB/openerp/api.py", line 266, in wrapper
    return new_api(self, *args, **kwargs)
  File "/home/athena/seedoo/OCB/openerp/api.py", line 592, in new_api
    result = method(self._model, cr, uid, self.ids, *args, **old_kwargs)
  File "/home/athena/seedoo/server-tools/sharedmail/wizard/mail_compose_message.py", line 64, in send_mail
    context['new_sharedmail_server_id'] = wizard.server_sharedmail_id.id
  File "/home/athena/seedoo/OCB/openerp/tools/misc.py", line 1280, in __setitem__
    raise NotImplementedError("'__setitem__' not supported on frozendict")
NotImplementedError: '__setitem__' not supported on frozendict

Qualcuno ha riscontrato lo stesso problema?