I assume you have tried uninstalling and re-installing 8.64? Going back is fine, but since most are working fine (except the media settings for hot/cold press) seems logical to try and figure out what's amiss in your system. certainly troubleshooting is pita, and sometimes slow, but if you do so methodically you should be able to isolate the issue.
Does the job show up in your printing queue and just not print? Or does it not even make it into the queue?
Yes, I did uninstall all Epson Print Drivers and reinstalled V8.64. No Change. And yes it does shows up in the printing queue. You click on print and you can see the status bar moving upper left corner in Lightroom. You even see the pop screen for Epson showing the status and that the printer is found. Then is states error. Really crazy as it is only happens when using printer profiles for Hot and Cold Press or Ultra-smooth. Go figure.