Hi John, I’ve tried 4 computers. Even used the older licence zip file O had from a few years ago. I used to have to do the firmware on one computer and licence on another one but now I can’t even do that. I have 8 printers I need to get up and running and stupidly got 8 keys with a jan 23 expiry as I thought I could get them all done in one day. pease help ASAP, even things i’ve done doesn’t work