I have an HP officejet Pro premium 8600 printer which is being used wirelessly. This week suddenly, my macbook pro retina cannot find the printer. The printer is setup wirelessly, and shows that it has no problems. Plus, my wife's macbook air is seeing the printer and has no problems with it. I got it to work by going over the network through my wife's air, but that is not a solution. I have downloaded the HP software several times, and reinstalled, with no result. Can anyone suggest an answer?