I tried to install both ways.
1) I unzipped the newscast.zip file and uploaded the folder to my wp themes folder. The error message under Available Themes reads:
The following themes are installed but incomplete. Themes must have a stylesheet and a template.
Template is missing.
2) I used the Install Feature within WordPress and received this message:
The package could not be installed. The style.css stylesheet doesn't contain a valid theme header.
Theme install failed.