MySQL ERROR:
Error Number: 1139
Description: Got error 'invalid character class' from regexp
Query: SELECT exp_linklist.member_id, exp_linklist.linklist_name, exp_linklist.linklist_title, exp_linklist.prepend_str, exp_linklist.append_str,exp_linklist.recently_updated, exp_linklist_urls.*
FROM exp_linklist_urls INNER JOIN exp_linklist ON exp_linklist_urls.linklist_id = exp_linklist.linklist_id WHERE exp_linklist.linklist_name = 'blogroll' AND url_status = 'open' AND keywords REGEXP '[[:<:]][[[:>:]]' ORDER BY url_title asc