please add the following statements in the config file to obtain the FlexYii extension:

'aliases' => array (
	...
	'booster' => realpath ( __DIR__ . '/../extensions/yiibooster' ), /* change if necessary */
	'flexyii' => realpath ( __DIR__ . '/../extensions/flexyii' ), /* change if necessary */
)

'import' => array (
	...
	'booster.helpers.*',
	'flexyii.components.*',
	'flexyii.validators.*',
	'flexyii.gii.flexyii*'
)

'components' => array (
	...
	'coreMessages'=>array('basePath'=>'protected/messages'),
	'booster' => array ('class' => 'booster.components.Booster'),
	'flexyii' => array ('class' => 'flexyii.components.FSApi'),
)

'modules' => array (
	...
	'gii' => array (
		...
		'generatorPaths' => array (
			...
			'flexyii.gii',
		)
	)
)

'preload' => array (
	...
	'booster', 
	'flexyii', 
),
