Alias "gii.GiiModule" is invalid. Make sure it points to an existing PHP file.

I am new to Yii and working with yii bootstrap. I extracted the files to my protected/extension directory and included the code in the protected/config/main.php as described here cniska.net/yii-bootstrap/setup.html

I am receiving this error : "Alias "gii.GiiModule" is invalid. Make sure it points to an existing PHP file."

‘modules’=>array(

   'gii'=>array(


	'generatorPaths'=>array(


		'bootstrap.gii', // since 0.9.1


	),


),

),

How to resolve this error?

Not sure if you’ve already resolved your issue, but in case you didn’t, you add the “generatorPaths” to the already existing “gii” module array, not overwriting it, like so:

‘gii’=>array(

‘class’=>‘system.gii.GiiModule’,

‘password’=>‘somePassword’,

// If removed, Gii defaults to localhost only. Edit carefully to taste.

‘ipFilters’=>array(‘127.0.0.1’,’::1’),

‘generatorPaths’=>array(

  'bootstrap.gii',

),

),

Hope that helps.