Page Admin doesn't show – solution here

WordPress 3.9 plugin 1.9
The page admin stay blank

How to resolve ?

Go to wp-content\plugins\wp-product-review\admin\layout\main_page.php

Line 10 change
alt="<?php echo cwp_config('admin_page_header'); ?>">

in
alt="<?php echo cwppos_config('admin_page_header'); ?>">

i will work now ^^

Xam1311

https://wordpress.org/plugins/wp-product-review/