sitecase assembly of an online store on Drupal 6

Hello Ivan.

I'm trying out the ready-made assembly from http://sitecase.ru for an online store.

I can't understand why when placing material "On the main page" a blank page is visible. 

In the site settings, I specified the main product to see all products on the main page. 

When creating a product, I check the box "place on the main page." I want to see a grid with all the store's products, but it's not there.  What could be the problem? Please advise. Thank you!