SQL error using Membership - missing table

I am getting the following SQL error in my error log, and I suspect it is contributing the slowdown of my site. I don't know if this happened when I upgraded Membership or not. Please help.

[09-Feb-2013 14:25:43] WordPress database error Table 'hilltop8_wrd2.wp_m_coupons' doesn't exist for query SELECT id FROM wp_m_coupons WHERE couponcode = '' made by require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), include_once('/plugins/membership/membershippremium.php'), membershipadmin->__construct, M_Coupon->__construct
[09-Feb-2013 14:25:43] WordPress database error Table 'hilltop8_wrd2.wp_m_coupons' doesn't exist for query SELECT * FROM wp_m_coupons WHERE id = 0 made by require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), include_once('/plugins/membership/membershippremium.php'), membershipadmin->__construct, M_Coupon->__construct, M_Coupon->get_coupon