Database / Log Error WooCommerce 2.1.9

These just started popping up in my error_log:

[03-Jun-2014 00:32:48 UTC] WordPress database error Out of memory (Needed 265289700 bytes) for query
                        SELECT COUNT( DISTINCT order_items.order_item_id )
                        FROM wp_woocommerce_order_items as order_items
                        LEFT JOIN wp_woocommerce_order_itemmeta AS itemmeta ON order_items.order_item_id = itemmeta.order_item_id
                        LEFT JOIN wp_postmeta AS postmeta ON order_items.order_id = postmeta.post_id
                        LEFT JOIN wp_term_relationships AS rel ON order_items.order_id = rel.object_ID
                        WHERE
                                rel.term_taxonomy_id IN ( 10, 9 ) AND
                                itemmeta.meta_value  = '2152' AND
                                itemmeta.meta_key    IN ( '_variation_id', '_product_id' ) AND
                                postmeta.meta_key    IN ( '_billing_email', '_customer_user' ) AND
                                (
                                        postmeta.meta_value  IN ( '[email protected]' ) OR
                                        (
                                                postmeta.meta_value = '984' AND
                                                postmeta.meta_value > 0
                                        )
                                )
                         made by require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), include('/plugins/woocommerce/templates/single-product.php'), wc_get_template_part, load_template, require('/plugins/woocommerce/templates/content-single-product.php'), do_action('woocommerce_after_single_product_summary'), call_user_func_array, superstore_product_reviews, comments_template, require('/plugins/woocommerce/templates/single-product-reviews.php'), wp_list_comments, Walker->paged_walk, Walker_Comment->display_element, Walker->display_element, call_user_func_array, Walker_Comment->start_el, call_user_func, woocommerce_comments, wc_get_template, include('/plugins/woocommerce/templates/single-product/review.php'), wc_customer_bought_product

Any idea what would be causing it? I’m on my own dedicated server, there’s 15GB of memory free, and php.ini and wp-config.php are both set to 384M as max memory usage.

I’m usually a WooCommerce pro, but cant figure this one out.

Thanks!

Ben

https://ww.wp.xz.cn/plugins/woocommerce/