Error cptitle

Hello,
Installed this extension http://www.opencart.com/index.php?route ... e=0&page=5
and getting this error: Notice: Undefined index: cptitle in /home/laikrodziu/domains/laikrodziurojus.lt/public_html/vqmod/vqcache/vq2-catalog_model_catalog_product.php on line 20
Need help

it means that cptitle is not defined in your:

catalog/model/catalog/product.php file, specifically, in this function:

public function getProduct($product_id) {

}

did you use auto or manual install?