Drupal subtheme won't load css, regions, or page.tpl.php

Question

I've just migrated my Drupal 7 live site to a fresh dev site and the default theme is only partially loading. Database, code, and files are fresh copies. Everything (content, links, etc) is good except for the theme.

The theme is listed under Appearance and is correctly set to default. The theme's image loads on the Appearance page, the name and info are loaded from the subtheme's .info file, and the parent theme's css is loading (zurb_foundation).

But the subtheme's custom css, regions, and favicon as defined in the subtheme.info are not loading. It's odd, like half the theme is working and half is not.

Attempted fixes include rebuilding the theme registry, switching themes back and forth, drush cc all, checking directory permissions.

Any clues?

Answer 1

I don't know why it broke, but I know the fix now.

Duplicate the theme folder. Rename the theme's info file. Load this as a new theme. Problem solved.

The contents of the theme directory are exactly the same, but the new name allows it to load correctly.

Answer 2

I know this is an older post, but the same happened to me recently.

The Live-Server used a different PHP Version (5.3.X). Switching to PHP 5.4 solved the problem immediately.