I have had the same experience. My Printer is the Epson Stylus Pro 7900
I called Epson and did not accomplish much. The same with Apple, they said I was the only victim of this problem as far as they knew. I referred them to this forum. I have not received any update from either company.
After I desinstalled and reinstalled the printer following the directions suggested in this forum the printer worked for just a couple of hours. The curious thing though is that it worked OK with images I processed in photoshop after the reinstalation of the driver etc. It did not work with older images. Three days later nothing worked, new or old.......back to the same issue.
It is a real problem. Thankfully I have a Mac Air. I did not upgrade the OSX in that portable computer . I installed the printer's driver in that computer and I use it in my network. In other words I work in my main computer but when I print I choose the printer driver in my laptotop(network) It takes a little longer because the laptop is connected to the network wirelessly but it works well with all pictures as it should be. The printer's cable is hooked to the MacAir.
The indiference demosntrated by these two prime companies, Apple and Epson is beyond belief.I felt like they did not care and in fact probably they do not. Also I am surprissed that the number of users with this problem seems to be to little. It is clearly a problem with the OSX upgrade. I tested it with a third computer. Another laptop ( this one belongs to my wife) I used it like I described with my Mac Air in the Network, It worked fine. Then I did the upgrade of OSX and voila......the same problem.
I hope we will find a solution. In the mean time if printing is mandatory follow my suggestions. it will work OK for sure. I have spent many hours trying a variety of steps suggested by some of my "computer gurus"
So far nothing works...
good luck to us all
Ataisa