Thanks. I did delete the printer from the Print and Scan but when I pressed the + key to add the Epson it did not recognize any printer software (I had deleted all software but had inserted the Epson printer disc. Again the message was something to the effect of "does not recognized operating system.
I agee with a previous commentator that I should not use this Epson disc software and that I now seem to need Apples printer software for Epson 645. Goggling "Apple software for Epson Workforce 645 printer using Yosimite os 2" I ran into problems trying to find such software. Seems all I got was "updates" which I have already installed. Any suggestions ?
Any help you can provide to "reset the printing system" would also be helpful.