I buy theme the name ( themeforest-4764351-book-store-responsive-ecommerce-html5-theme) this link :
[ Item Details] : http://themeforest.net/item/book-store-responsive-ecommerce-html5-theme/4764351
no description for instal includ the package. if it upload the folder of theme is= see the mesage error/
You can not install the package. Theme does not contain a style.css file.
thank you for help