here is where you made wrong in staff_settings2.php
this line
PHP Code:
$INSTALLER09['staff']['allowed'] = array( 'user1' => 1,'user2' => 2,'user3' => 3,'user4' => 4 )
it should be
PHP Code:
$INSTALLER09['staff']['allowed'] = array( 'user1' => 1,'user2' => 1,'user3' => 1,'user4' => 1