iMac 10.8.3 restarts every time communicating with Epson r1800 printer.

I have had my iMac and Epson Stylus Photo R1800 printer for about 5 years and haven't had any issues until today. I don't print that often (the last time was February), but today I had some crazy things happening. I was in Lightroom and tried to print a photo. I clicked on print and my computer immediately restarted and I received a message when it rebooted that "Your computer restarted because of a problem . . ." (followed by generic info). I tried again, same thing. Then I tried to go into Epson's Printer Utility application and as soon as I clicked on "check ink level status", my computer restarted.

Then I went into System Preferences into Printers and tried to remove and reinstall the printer. When I tried to reinstall, my computer restarted. Next, I cleared all my print settings by holding Control in the printer dialogue box (where you add or remove printers). Again, I tried to re-install my printer and as soon as I clicked to Add, my computer restarted.

I've checked to see if there are any printer driver updates and there are none. Again, I was printing fine a few months ago and now every time my computer tries to communicate with my printer it restarts . . .

Any help would be greatly appreciated!