I've got the 7250 as well -- same exact issue. I sent an e-mail to Kodak support on Friday last week -- haven't heard anything, but they did ask for 2 business days time to respond.
I've been running the Yosemite Beta on one of my machines for a few months now and my printer stopped working on that one after the upgrade. I kept Mavericks on my other Mac until this weekend, and printing still worked from that machine until I upgraded to Yosemite over the weekend.
I've got Linux and Windows virtual machines that can print to the ESP 7250, so I can still print, albeit with the hassle of firing up a VM and printing from there... I sure hope Kodak responds! I offered to help them test any beta-quality drivers they may have, so -- we'll see what they say!
I've been planning to ditch the printer and get a new one, but I'd rather not have to do it right this minute just for a driver issue :-/