Photoshop CS5 Printing Problem on iMac with Epson 3880 printer

All of a sudden I can't print from Photoshop CS5 on my iMac with OSX Mountain Lion installed. I am able to print from Illustrator, however. Have tried to update the Epson 3880 driver. After clicking on "Print", it doesn't register with the computer, and from then on, the "Print" option is greyed out.