Why doesn't a cloned theme work as the original theme? I've cloned a theme, by duplicating and renaming it, in /sites/all/themes/. When I switch to the new theme, portions of the theme, a slideshow, don't work.

It looks like views_get_view_result() in template.php is not returning anything. Is there some configuration I need to set up per theme?

I'm new to Drupal and I am helping out a friend. The site is using Drupal 7.
In template.php the functions that begin with the template name e.g. themename_preprocess_page need to be renamed to have the new theme name in them e.g. newthemename_preprocess_page.