odoo8 + auth saml: error

[mabahma]

Hello i've loaded auth saml addon into odoo 8, restarted the server.

But when i click on configure link in admin page , i have this error

---

Odoo Server Error
Traceback (most recent call last):
File "/home/odoo/git/Odoo/odoo/openerp/http.py", line 648, in _handle_exception
return super(JsonRequest, self)._handle_exception(exception)
File "/home/odoo/git/Odoo/odoo/openerp/http.py", line 685, in dispatch
result = self._call_function(**self.params)
File "/home/odoo/git/Odoo/odoo/openerp/http.py", line 321, in _call_function
return checked_call(self.db, *args, **kwargs)
File "/home/odoo/git/Odoo/odoo/openerp/service/model.py", line 118, in wrapper
return f(dbname, *args, **kwargs)
File "/home/odoo/git/Odoo/odoo/openerp/http.py", line 314, in checked_call
result = self.endpoint(*a, **kw)
File "/home/odoo/git/Odoo/odoo/openerp/http.py", line 964, in call
return self.method(*args, **kw)
File "/home/odoo/git/Odoo/odoo/openerp/http.py", line 514, in response_wrap
response = f(*args, **kw)
File "/home/odoo/git/Odoo/odoo/addons/web/controllers/main.py", line 888, in call_kw
return self._call_kw(model, method, args, kwargs)
File "/home/odoo/git/Odoo/odoo/addons/web/controllers/main.py", line 880, in _call_kw
return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)
File "/home/odoo/git/Odoo/odoo/openerp/api.py", line 250, in wrapper
return old_api(self, *args, **kwargs)
File "/home/odoo/git/Odoo/odoo/addons/auth_oauth/res_config.py", line 18, in default_get
res = super(base_config_settings, self).default_get(cr, uid, fields, context=context)
File "/home/odoo/git/Odoo/odoo/openerp/api.py", line 250, in wrapper
return old_api(self, *args, **kwargs)
File "/home/odoo/git/Odoo/odoo/openerp/addons/base/res/res_config.py", line 536, in default_get
res.update(getattr(self, method)(cr, uid, fields, context))
File "/home/odoo/git/Odoo/odoo/openerp/api.py", line 250, in wrapper
return old_api(self, *args, **kwargs)
File "/home/odoo/addons/auth_saml/model/base_settings.py", line 63, in get_default_allow_saml_uid_and_internal_password
self.allow_saml_uid_and_internal_password(cr, uid, [], context=context)
File "/home/odoo/git/Odoo/odoo/openerp/fields.py", line 819, in get
record.ensure_one()
File "/home/odoo/git/Odoo/odoo/openerp/models.py", line 5419, in ensure_one
if len(self) == 1:
File "/home/odoo/git/Odoo/odoo/openerp/models.py", line 5645, in len
return len(self._ids)
AttributeError: 'base.config.settings' object has no attribute '_ids'

do you have any idea?
many thanks