In responsive-lightbox/js/front.js
There is a strange block of code:
social_tools: (rlArgs.social === '1' ? '<div class="pp_social"><div class="twitter">Tweet<script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script></div><div class="facebook"><iframe src="http://www.facebook.com/plugins/like.php?locale=en_US&href='+location.href+'&layout=button_count&show_faces=true&width=500&action=like&font&colorscheme=light&height=23" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:500px; height:23px;" allowTransparency="true"></iframe></div></div>' : ''),
apparently accidentally pasted into the prettyphoto “functions” (it is not indented).
Might it be that some intended code was obliterated through some accident? The plug in doesn’t work at all in Firefox, works partially in Opera, Chrome and IE9 and nearly fully functions in Safari? Simply commenting out the strange code (above) had no effect.
BTW, this was unchanged by the recent update.