Could not load class: from mysql while Developing an Extra

[2012-11-15 10:16:54] (ERROR @ /index.php) Could not load class: news from mysql.news.
[2012-11-15 10:16:54] (ERROR @ /index.php) Could not load class: news from mysql.news.
[2012-11-15 10:17:26] (ERROR @ /index.php) Could not load class: news from mysql.news.
[2012-11-15 10:17:26] (ERROR @ /index.php) Could not load class: news from mysql.news.
[2012-11-15 10:17:52] (ERROR @ /index.php) Could not load class: news from mysql.news.
[2012-11-15 10:17:52] (ERROR @ /index.php) Could not load class: news from mysql.news.

 $canews = $modx->getService('newsbase','newsbase', $modx->getOption('canews.core_path',null,$modx->getOption('core_path').'model/canews/').'model/canews/',$scriptProperties);
    //echo get_class($canews);
    if(!($canews instanceof newsbase)) return 'zła instancja';
    
    $tpl = $modx->getOption('tpl',$scriptProperties, 'rowTpl');
    $sort = $modx->getOption('sort', $scriptProperties, 'id');
    $dir = $modx->getOption('dir',$scriptProperties, 'ASC');
    $output = '';

    $m = $modx->getManager();
    
    $created = $m->createObjectContainer('news');
    return $created ? 'Table created.' : 'Table not created.';

require_once (dirname(dirname(__FILE__)) . '/news.class.php');

//require_once (strtr(realpath(dirname(dirname(__FILE__))), '\\', '/') . '/news.class.php');
class news_mysql extends news {
    public function __construct(& $xpdo) {
        parent :: __construct($xpdo);
    }
    
}

<?xml version="1.0" encoding="UTF-8"?>
<model package="canews" baseClass="xPDOObject" platform="mysql" defaultEngigne="MyISAM">
    <object class="category" table="category" extends="xPDOSimpleObject">
        <field key="id" dbtype="int" precision="11" phptype="integer" />
        <field key="created_at" dbtype="datetime" phptype="datetime" />
        <field key="menuindex" dbtype="int" precision="5" phptype="integer" />
        
        <composite alias="translation_collection" class="category_i18n" local="id" foreign="category_id" cardinality="many" owner="local" />
        <composite alias="news_collection" class="news" local="id" foreign="category_id" cardinality="many" owner="local" />
    </object>
    
    <object class="category_i18n" table="category_i18n" extends="xPDOSimpleObject">
        <field key="id" dbtype="int" precision="11" phptype="integer" />
        <field key="category_id" dbtype="int" precision="11" phptype="integer" null="false"/>
        <field key="lang_name" dbtype="varchar" precision="5" phptype="string" null="false"/>
        <field key="title" dbtype="varchar" precision="255" phptype="string" default=""/>
    </object>
    
    <object class="news" table="news" extends="xPDOSimpleObject">
        <field key="id" dbtype="int" precision="11" phptype="integer" />
        <field key="created_at" dbtype="datetime" phptype="datetime" />
        <field key="published_at" dbtype="datetime" phptype="datetime" />
        <field key="depublished_at" dbtype="datetime" phptype="datetime" />
        <field key="published" dbtype="int" precision="2" phptype="integer" />
        <field key="category_id" dbtype="int" precision="11" phptype="integer" null="false"/>
        
        <composite alias="translation_collection" class="news_i18n" local="id" foreign="news_id" cardinality="many" owner="local" />
    </object>
    
     <object class="news_i18n" table="news_i18n" extends="xPDOSimpleObject">
        <field key="id" dbtype="int" precision="11" phptype="integer" />
        <field key="news_id" dbtype="int" precision="11" phptype="integer" null="false" />
        <field key="lang_name" dbtype="varchar" precision="5" phptype="string" null="false"/>
        <field key="title" dbtype="varchar" precision="255" phptype="string" default=""/>
        <field key="content" dbtype="text" phptype="string" default=""/>
    </object>
</model>

<?php
class news extends xPDOSimpleObject {}

<?php

class newsbase{
    function __construct(modX &$modx, array $config = array()) {
        $this->modx =&$modx;
        $basePath = $this->modx->getOption('canews.core_path', $config, $this->modx->getOption('core_path') . 'components/canews/');
        $assetsUrl = $this->modx->getOption('canews.assets_url', $config, $this->modx->getOption('assets_url') . 'components/canews/');
        $this->config = array_merge(array(
            'basePath' => $basePath,
            'corePath' => $basePath,
            'modelPath' => $basePath . 'model/',
            'processorsPath' => $basePath . 'processors/',
            'templatesPath' => $basePath . 'templates/',
            'chunksPath' => $basePath . 'elements/chunks/',
            'jsUrl' => $assetsUrl . 'js/',
            'cssUrl' => $assetsUrl . 'css/',
            'assetsUrl' => $assetsUrl,
            'connectorUrl' => $assetsUrl . 'connector.php',
                ), $config);
    }

}

?>