the zip file you provide at ThemeForest is corrupt. Important files are missing (e.g. theme thumbnail in the theme main folder) and WordPress (version 3.1.) can’t install the theme. I tried various ways of unpacking and installation but WordPress says that the theme is corrupt and the default theme is activated.
I submit a support ticket, but it looks that ThemeForest doesn’t provide support for WordPress themes. How can I get a working theme?