Hi everyone, I have a problem with the Search: every research I make, the answer is always "There is no product that matches the search criteria." .

Must I configure something in the products?

I have OpenCart 1.5.6.4 and this are the error I receive: 2014-08-28 12:54:51 - PHP Notice:  Undefined variable: filter_name in /var/www/html/catalog/view/theme/multistore/template/common/header.tpl on line 157 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_name in /var/www/html/catalog/view/theme/multistore/template/common/header.tpl on line 157 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_name in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 12 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_name in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 15 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_category_id in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 20 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_category_id in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 20 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_category_id in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 20 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_category_id in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 20 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_category_id in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 20 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_category_id in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 20 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_category_id in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 20 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_sub_category in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 41 2014-08-28 12:55:07 - PHP Notice:  Undefined variable: filter_description in /var/www/html/catalog/view/theme/multistore/template/product/search.tpl on line 47

Thanks in advance

Hello Sergio,

This error seems to be related to a third party module and not to the Multistore Theme. Do you have any third party filter module installed on your store? Probably there is any incompatibility issue between the Multistore Theme and a third party filter module.