Error with the new calendar view

The new menu entry "Weekly Schedule" crash and displays the following error message:

Client Traceback (most recent call last):
  File "/opt/openerp/server/openerp/addons/web/common/http.py", line 180, in dispatch
    response["result"] = method(controller, self, **self.params)
  File "/opt/openerp/server/openerp/addons/web/controllers/main.py", line 877, in search_read
    return self.do_search_read(req, model, fields, offset, limit, domain, sort)
  File "/opt/openerp/server/openerp/addons/web/controllers/main.py", line 902, in do_search_read
    ids = Model.search(domain, offset or 0, limit or False, sort or False, context)
  File "/opt/openerp/server/openerp/addons/web/common/openerplib/main.py", line 250, in proxy
    args, kw)
  File "/opt/openerp/server/openerp/addons/web/common/openerplib/main.py", line 117, in proxy
    result = self.connector.send(self.service_name, method, *args)
  File "/opt/openerp/server/openerp/addons/web/common/http.py", line 608, in send
    raise xmlrpclib.Fault(openerp.tools.exception_to_unicode(e), formatted_info)

Server Traceback (most recent call last):
  File "/opt/openerp/server/openerp/addons/web/common/http.py", line 593, in send
    return openerp.netsvc.dispatch_rpc(service_name, method, args)
  File "/opt/openerp/server/openerp/netsvc.py", line 360, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/opt/openerp/server/openerp/service/web_services.py", line 586, in dispatch
    res = fn(db, uid, *params)
  File "/opt/openerp/server/openerp/osv/osv.py", line 167, in execute_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/opt/openerp/server/openerp/osv/osv.py", line 121, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/opt/openerp/server/openerp/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/opt/openerp/server/openerp/osv/osv.py", line 164, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/opt/openerp/server/openerp/addons/school_attendance/school_attendance.py", line 805, in search
    ret=super(school_seance, self).search(cr, uid, args, offset=offset, limit=limit, order=order, context=context2, count=count)
  File "/opt/openerp/server/openerp/osv/orm.py", line 2245, in search
    return self._search(cr, user, args, offset=offset, limit=limit, order=order, context=context, count=count)
  File "/opt/openerp/server/openerp/osv/orm.py", line 4586, in _search
    query = self._where_calc(cr, user, args, context=context)
  File "/opt/openerp/server/openerp/osv/orm.py", line 4435, in _where_calc
    e = expression.expression(cr, user, domain, self, context)
  File "/opt/openerp/server/openerp/osv/expression.py", line 358, in __init__
    self.parse(cr, uid, distribute_not(normalize(exp)), table, context)
  File "/opt/openerp/server/openerp/osv/expression.py", line 464, in parse
    right = field_obj.search(cr, uid, [(field_path[1], operator, right)], context=context)
  File "/opt/openerp/server/openerp/addons/school_teachers_management/school_teachers_management.py", line 133, in search
    ret=super(school_teacher_seance, self).search(cr, uid, args, offset=offset, limit=limit, order=order, context=context2, count=count)
  File "/opt/openerp/server/openerp/osv/orm.py", line 2245, in search
    return self._search(cr, user, args, offset=offset, limit=limit, order=order, context=context, count=count)
  File "/opt/openerp/server/openerp/osv/orm.py", line 4586, in _search
    query = self._where_calc(cr, user, args, context=context)
  File "/opt/openerp/server/openerp/osv/orm.py", line 4435, in _where_calc
    e = expression.expression(cr, user, domain, self, context)
  File "/opt/openerp/server/openerp/osv/expression.py", line 358, in __init__
    self.parse(cr, uid, distribute_not(normalize(exp)), table, context)
  File "/opt/openerp/server/openerp/osv/expression.py", line 460, in parse
    right = field_obj.search(cr, uid, [(field_path[1], operator, right)], context=context)
  File "/opt/openerp/server/openerp/osv/orm.py", line 2245, in search
    return self._search(cr, user, args, offset=offset, limit=limit, order=order, context=context, count=count)
  File "/opt/openerp/server/openerp/osv/orm.py", line 4586, in _search
    query = self._where_calc(cr, user, args, context=context)
  File "/opt/openerp/server/openerp/osv/orm.py", line 4435, in _where_calc
    e = expression.expression(cr, user, domain, self, context)
  File "/opt/openerp/server/openerp/osv/expression.py", line 358, in __init__
    self.parse(cr, uid, distribute_not(normalize(exp)), table, context)
  File "/opt/openerp/server/openerp/osv/expression.py", line 454, in parse
    raise ValueError("Invalid field %r in domain expression %r" % (left, exp))
ValueError: Invalid field 'user_id.id' in domain expression [('user_id.id', '=', 20)]