Since rolling forward wmf.7 there are several errors that have cropped up with AbuseFilter:
Notice: Cannot access property on non-object in /srv/mediawiki/php-1.28.0-wmf.7/extensions/AbuseFilter/AbuseFilter.class.php on line 754 Notice: Cannot access property on non-object in /srv/mediawiki/php-1.28.0-wmf.7/extensions/AbuseFilter/AbuseFilter.class.php on line 173 Notice: Cannot access property on non-object in /srv/mediawiki/php-1.28.0-wmf.7/extensions/AbuseFilter/AbuseFilter.class.php on line 826