Is this on the template builder or in the main theme options? Would it possible for you to re-download the files from Themeforest again and then upload that version. Just in case there was an error with the initial upload or the files weren't properly updated on themeforest at the time.
If you can also create a temporary admin account for me, I'll log in and see if I can shed some light on whats going on.
You can send the information to my email at DevinVinson (at) gmail.com. Make sure to include a link to this topic so that my spam filter doesn't grab it :)