Coursepress Checkout Error

Hi there,

I'm getting the following error on my checkout page. Your help would be appreciated:

Warning: getimagesize(): http:// wrapper is disabled in the server configuration by allow_url_fopen=0 in /home/thepodca/public_html/wp-content/plugins/coursepress/includes/classes/class.shortcodes.php on line 1085

Warning: getimagesize( failed to open stream: no suitable wrapper could be found in /home/thepodca/public_html/wp-content/plugins/coursepress/includes/classes/class.shortcodes.php on line 1085

The page can be found here: