I’m enjoying the plugin too, but search still does not work for me either in version 2.06.10 (WP 3.5).
As noted in an earlier thread, $FSREPSearch is set to “S”. $FSREPSearch is fine until line 147 of define.php at which point it gets set to the value of $FSREPSearch[‘query’]. Commenting out line 147 of define.php fixes search for me. I haven’t dug deep enough to discover what $FSREPSearch[‘query’] is supposed to be, so I may be breaking some functionality by commenting this out, but so far things are looking good…