I upgraded from PHP 5.2. to PHP 5.3.23 a couple of days and the following error messages have just appeared. The site is on HostMonster. I'm at a loss. I'm using the current production version of wp e-commerce, free version. I haven't made any changes to it in weeks. Any ideas or suggestions?
[09-May-2013 23:27:21 America/Denver] PHP Fatal error: Call to undefined function add_action() in /home/conserv/public_html/wp-content/plugins/wp-e-commerce/wpsc-includes/productfeed.php on line 16
[10-May-2013 03:04:53 America/Denver] PHP Fatal error: Call to undefined function add_action() in /home/conserv/public_html/wp-content/plugins/wp-e-commerce/wpsc-admin/init.php on line 445