This is wrong, either:

````php
$definition = new Definition(''Doctrine\Bundle\PHPCRBundle\Initializer\GenericInitializer', array(
    array('%acme.content_basepath%', '%acme.menu_basepath%'),
    '%acme.cnd%',
));
````
or:
````php
$definition = new Definition(
    'Doctrine\Bundle\PHPCRBundle\Initializer\GenericInitializer',
    array(
        array('%acme.content_basepath%', '%acme.menu_basepath%'),
        '%acme.cnd%',
    )
);
````