Parese error on adminlib.php, line 2536, for moodle_19_weekly

A parse error occurs when updating to 1.9 weekly 2007101533.01 (build 20090114). Parse error is due to line 2536 of lib/adminlib.php

class admin_setting_users_with_capability extends admin_setting_configmultiselect {
protected $capability; <----

Commenting out line "ptotected $capability;" the parse error disappear.