Fallo al activar WP e-commerce

[lynxstyle]

Hola chic@s

Acabo de intalar para probar el plugins de e-commerce y al intentar activarlo me da el siguiente error.

Warning: Call-time pass-by-reference has been deprecated - argument passed by value; If you would like to pass it by reference, modify the declaration of do_action(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. However, future versions may not support this any longer. in /var/www/vhosts/lynxstyle.net/httpdocs/wp-content/plugins/wp-e-commerce/wpsc-includes/cart.class.php on line 881

Warning: Call-time pass-by-reference has been deprecated - argument passed by value; If you would like to pass it by reference, modify the declaration of do_action(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. However, future versions may not support this any longer. in /var/www/vhosts/lynxstyle.net/httpdocs/wp-content/plugins/wp-e-commerce/wpsc-includes/cart.class.php on line 1052

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 7680 bytes) in /var/www/vhosts/lynxstyle.net/httpdocs/wp-content/plugins/wp-e-commerce/wpsc-admin/includes/display-items-functions.php on line 1314


Alguien me podría echar una mano?

Gracias de antemano