"The package could not be installed. The theme is missing the style.css stylesheet."

#1

Installing Theme from uploaded file: themeforest-253220-udesign-responsive-wordpress-theme.zip
Unpacking the package…

Installing the theme…

The package could not be installed. The theme is missing the style.css stylesheet.

Theme install failed.

(on a GoDaddy hosted WP site).

#2

Go here http://themeforest.net/downloads

Click the download button

Choose ‘Installable WordPress File Only’

Use that

#3

If you use full download package, you should unzip it first, you could find installation files in it