I have a problem with the "manage_role" function in my product, when i try to create a "EspaceProjet" : -------------------- class EspaceProjet(ObjectManager, PropertyManager, RoleManager, Collection, OFS.SimpleItem.Item, FindSupport): __ac_permissions__=( ('Add Espace Projet',('manage_addEspaceProjet',), ('Manager','Animateur')), ) def __init__(self): if not ('Animateur' in self.userdefined_roles()): self._addRole('Animateur') self.manage_role('Animateur', ['View', 'View management screens', 'Add Folders', 'Delete objects', 'Access contents information', 'FTP access', 'Manage properties', 'Manage users', 'Undo changes', 'Add Espace Projet' ] ) ---------------------- The message is : <H2>Zope Error</H2> <P>Zope has encountered an error while publishing this resource. </P> <P> <STRONG>Error Type: AttributeError</STRONG><BR> <STRONG>Error Value: aq_acquire</STRONG><BR> ... File D:\JLB\Zope\lib\python\Products\EspaceProjet\EspaceProjet.py, line 32, in manage_addEspaceProjet File D:\JLB\Zope\lib\python\Products\EspaceProjet\EspaceProjet.py, line 73, in __init__ (Object: ElementWithAttributes) File D:\JLB\Zope\lib\python\AccessControl\Role.py, line 177, in manage_role (Object: ElementWithAttributes) File D:\JLB\Zope\lib\python\AccessControl\Role.py, line 136, in ac_inherited_permissions (Object: ElementWithAttributes) File D:\JLB\Zope\lib\python\OFS\ObjectManager.py, line 173, in _subobject_permissions (Object: ElementWithAttributes) AttributeError: (see above)