Stackover FLow line 132 after 5.15 upgrade

Wim,

Not sure really where to take this one. It happened after upgrading to D 5.15

I get a pop-up Stack Overflow line 132 - when I enter an exposed filter page

The message on the Exposed Query Box - said to click update

I received the below when I clicked update

warning: mysql_real_escape_string() expects parameter 1 to be string, array given in /home/me.com/includes/database.mysql.inc on line 402.
user warning: 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 '= '') AND (. IN ('',''))' at line 1 query: SELECT count(node.nid) FROM node node LEFT JOIN content_field_location content_field_location ON node.vid = content_field_location.vid LEFT JOIN content_field_location content_field_location2 ON node.vid = content_field_location2.vid LEFT JOIN content_field_category content_field_category ON node.vid = content_field_category.vid WHERE (node.type IN ('classifieds')) AND (content_field_location.field_location_value = '') AND (. = '') AND (. IN ('','')) in /home/me.com/includes/database.mysql.inc on line 174.
warning: mysql_real_escape_string() expects parameter 1 to be string, array given in /home/me.com/includes/database.mysql.inc on line 402.
user warning: 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 '= '') AND (. IN ('','')) LIMIT 0, 25' at line 1 query: SELECT node.nid, node.title AS node_title, node.changed AS node_changed FROM node node LEFT JOIN content_field_location content_field_location ON node.vid = content_field_location.vid LEFT JOIN content_field_location content_field_location2 ON node.vid = content_field_location2.vid LEFT JOIN content_field_category content_field_category ON node.vid = content_field_category.vid WHERE (node.type IN ('classifieds')) AND (content_field_location.field_location_value = '') AND (. = '') AND (. IN ('','')) LIMIT 0, 25 in /home/me.com/includes/database.mysql.inc on line 174.

note: I remebered to reload jquery_update to /misc and the Site Status page says - installed correctly