I cannot get Lightroom 5 to print to my Epson 3880 in Mac OS X 10.8.4. Lightroom 4 works just fine. However, from Lightroom 5, it starts spooling and then nothing happens.
I've tried reinstalling drivers, restarting CUPS, rebooting, restarting Lightroom, power cycling the printer, etc. etc. Lightroom 4 works great, Lightroom 5 does not. This appears to clearly be a bug with Lightroom 5.
Sounds like you may have a corrupt preferences file: http://www.lightroomforums.net/showthread.php?14226-Resetting-(or-Tras hing-)-the-Lightroom-Preferences-file