Fatal Error Message

I get this error when trying to view WooCommerce product pages (https://www.studiooc.com/?product=hourly-studio-rental):

Warning: require_once(/home/content/72/8032372/html/wp-content/themes/studio_oc_2011/header.php) [function.require-once]: failed to open stream: Permission denied in /home/content/72/8032372/html/wp-includes/template.php on line 441

Fatal error: require_once() [function.require]: Failed opening required '/home/content/72/8032372/html/wp-content/themes/studio_oc_2011/header.php' (include_path='.:/usr/local/php5/lib/php') in /home/content/72/8032372/html/wp-includes/template.php on line 441

I am a WP newbie, so I’m having trouble deciphering what the issue is.

Our M.I.A. web designer made our site with a YooTheme (Warp/Nano) which apparently doesn’t support WooCommerce integration.

Any help would be greatly appreciated! ??