DevTools - Cannot create models from Postgresql DB

I am trying to generate models with DevTools for my already existing db structure. I have a db called postgre and it has 2 schemas - the default one called public and another one called coiny. The coiny schema contains 5 tables with their foreign keys.

My config.php contents:

    return new \Phalcon\Config(array(
        'database' => array(
            'adapter'       => 'Postgresql',
            'host'          => 'localhost',
            'port'          => '5432',
            'username'      => 'postgres',
            'password'      => '*********',
            'dbname'        => 'postgres',
            'schema'        => 'coiny',
        ),
        'application' => array(
            'controllersDir'=> __DIR__ . '/../../app/controllers/',
            'modelsDir'     => __DIR__ . '/../../app/models/',
            'viewsDir'      => __DIR__ . '/../../app/views/',
            'pluginsDir'    => __DIR__ . '/../../app/plugins/',
            'libraryDir'    => __DIR__ . '/../../app/library/',
            'cacheDir'      => __DIR__ . '/../../app/cache/',
            'baseUri'       => '/coiny/',
        ),
    ));

My services.php has:

    use Phalcon\Db\Adapter\Pdo\Postgresql as DbAdapter;

    ...

    $di->setShared('db', function () use ($config) {
        return new DbAdapter(array(
            'host' => $config->database->host,
            'port' => $config->database->port,
            'username' => $config->database->username,
            'password' => $config->database->password,
            'dbname' => $config->database->dbname,
            'schema' => $config->database->schema,
        ));
    });

When I try to generate models from the DT GUI I only get this screen:

I've tried also to use the command line, still there was no result. No output or error was presented after executing

phalcon.bat model --schema=coiny --get-set --name=participants

I am using a Win7 x64 with Bitnami WAPP Statck 5.515'0 Dev and the Phalcon 1.3.2 x86 extension

I will highly appreciate any comments and suggestions in order to solve this.