Comment 1 for bug 1428715

  File "/usr/lib/python2.7/dist-packages/openerp/addons/base/ir/ir_attachment.py", line 283, in read
    self.check(cr, uid, ids, 'read', context=context)
  File "/usr/lib/python2.7/dist-packages/openerp/addons/document/document.py", line 84, in check
    self.pool.get('document.directory').check_access_rule(cr, uid, [parent_id for (parent_id,) in cr.fetchall()], mode, context=context)
  File "/usr/lib/python2.7/dist-packages/openerp/osv/orm.py", line 4019, in check_access_rule
    self._check_record_rules_result_count(cr, uid, sub_ids, returned_ids, operation, context=context)
  File "/usr/lib/python2.7/dist-packages/openerp/osv/orm.py", line 3968, in _check_record_rules_result_count
    (self._description, operation))
except_osv: (u'Access Denied', u'The requested operation cannot be completed due to security restrictions. Please contact your system administrator.\n\n(Document type: Directory, Operation: read)')