Sorry, I am new to this forum, so there's a blank entry from me.
So, I had iOS 8.4.x with a MacBook Pro. I have an Epson Workforce 845 All in One. I set it up with some driver originally when I got the laptop, I had to download it because no CD drive. So, it was all good, WI-FI worked, duplex worked. But I just recently upgraded to Yosemite, 10.10.x. Had to reinstall driver because every time I went to print something I lost WI-FI connection for my laptop so everything froze. Yes, that's fixed now with this "general Epson" driver I think I installed. However, 2 things now don't work. WI-FI printing, and duplex printing. Duplex is grayed out. Can't find any other mention of it in the dialog boxes. Should I start over and install the printer once again? The driver download page says I have the most current one??
Thanks for any help you can provide.