uncaught exception: [CKEDITOR.editor] The instance "Articles

$oCKeditor = new CKeditor(get_class($model).'['.$attribute.']');
$oCKeditor->basePath = $ckBasePath;
if(isset($config) && is_array($config)){
    foreach($config as $key=>$value){
        $oCKeditor->config[$key] = $value;
    }
}
CKFinder::SetupCKEditor($oCKeditor, Yii::app()->baseUrl . '/ckfinder/');
$oCKeditor->editor(get_class($model).'['.$attribute.']',$defaultValue);