Hello Gorodophysio, Sorry for the problems with PrestaShop upgrade. I saw your previous response and commented on it. It appears that you're using a shop that was created in Premium Web Builder. This does not mean that you can upgrade the shop to PrestaShop 1.6. These are two totally different programs. You would need to rebuild the store in PrestaShop. You can use use Softaculous to install PrestaShop and then begin building your store with that program. PrestaShop is a much more complete ecommerce solution and one that I would highly recommend (especially over the Premium Web Builder's shop). I hope this helps to answer your question! Please let us know if you require any further assistance. Regards, Arnel C.