hi
im facing the same problem with this template : http://addons.prestashop.com/en/food-drinks/11063-restaurant-cafe-prestashop-theme-marris.html
even http://addons.prestashop.com/en/front-office-features-prestashop-modules/1713-template-installer.html this installator is also not supporting anymore with new prestashop 1.6.0.8 ver
i need a help in it , thanks