B_Dark on "[Plugin: W3 Total Cache] Strange php sql db errors"

i got this error on my error_log

WordPress database error Table 'xxxx_dbsp.wp_users' doesn't exist for query SELECT COUNT(*) FROM wp_users INNER JOIN wp_usermeta ON (wp_users.ID = wp_usermeta.user_id) WHERE 1 = 1 AND ( wp_usermeta.meta_key = 'wp_2_capabilities' ) made by do_action_ref_array, call_user_func_array, Yoast_Tracking->tracking, W3_Db->query, W3_DbCache->query, W3_DbCallUnderlying->query, W3_Db->query, W3_DbProcessor->query, W3_Db->default_query

for secutiry reasons i have change the prefix "wp_", but why he tried to find the deafualt? how can I fix this?

http://wordpress.org/plugins/w3-total-cache/