One thing that I do every time I unzip to my Dev site is restore my local copy of the configuration.php and remove the .htaccess files. I just don't require them for my Dev site in MAMP. What? You aren't using .htaccess files for security? That's the other free insurance (against hacking). See http://forum.joomla.org/viewtopic.php?t=102558.
Thank you to the developer!