Fix fatal error related with an opencart extension - repost

Hello, I have installed following extension to my opencart website: [login to view URL] I have another extension on same website: [login to view URL] I have modified inserted all codes manually to my custom template and everything is working perfect except the second extension above. Even if I insert all codes into the php file I get following error: Fatal error: Call to a member function getPromo() on a non-object in /home/website/public_html/catalog/controller/product/[login to view URL] on line 655 I could not fix this error and need help for this. I can provide all details related with the extensions. Please note this is a little php error fix and my budget is limited. I will try to choose best offer. Thanks.