buka file main.php di folder C:\xampp\htdocs\app1\myapp\protected\config
ada baris
/*
'gii'=>array(
'class'=>'system.gii.GiiModule',
'password'=>'Enter Your Password Here',
// If removed, Gii defaults to localhost only. Edit carefully to taste.
'ipFilters'=>array('127.0.0.1','::1'),
),
*/
hilangkan tanda /* dan */ jadi spt ini
dan edit password misalnya aswandi