There is no such products not found message in HikaShop actually so I'm a bit surprised.
That message is my text, placed (as suggested by Hika Support) in the View - products/listing.php, as below:
<?php }
$html = ob_get_clean();
if(!empty($html)){echo 'Sorry, no products corresponding to your search were found.';}else{ ?>
Otherwise the page is left completely empty whenever a search returns no results. I included that screenshot (maincol.jpg) to show that the product listings are not displaying on the front end after the category link is activated.
I have made changes to the Hika settings to try to establish the category links and enable the product listings to display on the front end - I have added new products to the imported listing, but still no display on front end. I have created a new category, 'Miscellaneous', in case it was the imported categories that were causing the problem, and added a new product to that category - still no display front end.
I have attached some more screenshots of the Hika back end - product/category menus, modules etc., plus the front end category list. Hope these are of some help to you.
I have also PMed, reference this post, the home page link and the backend access details in case you want to use them. The product links by category are on a hidden menu but, as I said before, I have put that menu in the right-hand column for easier access. The category listing is in the left hand column under the heading 'Media Types We Stock'. That displays as required, but the category title links to the product listings are not working.
Thank you.