If you find these 2 errors in the error log.
- …file_get_contents() [function.file-get-contents]: http:// wrapper is disabled in the server configuration by allow_url_fopen=0 in…
- …failed to open stream: no suitable wrapper could be found in…
Edit the php.ini and enable the following 2 settings.
allow_url_fopen = On allow_url_include = On
Restart Apache and they should be fixed.