[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 113: preg_replace(): Compilation failed: unrecognized character after (?< at offset 55

Fatal error: Call to undefined method bbcode::Text_effect_pass() in /www/htdocs/w00b1056/obsidianconflict_net/forums/includes/bbcode.php(113) : regexp code on line 1