[Plugin: Facebook Comments for WordPress] Upgrade to WP causes the Facebook commenting plugin to sto

Error I get when attempting to activate plugin after the WP upgrade to 3.4.1 is

Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 72 bytes) in /var/www/vhosts/XXXXXXXXX.com/httpdocs/wp-includes/meta.php on line 580

The developers website is non-responsive.

http://wordpress.org/extend/plugins/facebook-comments-for-wordpress/