Pay Per View Server Errors Upon Activation

Upon activating Pay Per View, the following error began repeating in the server logs.

Wordpress Multisite 3.3.1

[16-Mar-2012 23:11:43] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'subs, wp_usermeta recur
WHERE subs.user_id = recur.user_id
AND subs.meta_k' at line 1 for query
DELETE FROM wp_usermeta subs, wp_usermeta recur
WHERE subs.user_id = recur.user_id
AND subs.meta_key='ppw_subscribe' AND NOW() > subs.meta_value
AND recur.meta_key='ppw_recurring' AND recur.meta_value <> '1'
made by require, require_once, require_once, require_once, do_action, call_user_func_array, PayPerView->init, PayPerView->clear_subscriptions

Any assistance would be apreciated.
Phil D