Since the 10.10.2 upgrade on Yosemite, my Epson NX420 won't connect to wifi

I got the update to Yosemite this week, and since then my Epson NX420 will not connect to wifi. I've deleted the printer and re-installed, reset the router and still won't connect. If I hardwire the printer, enter my info into printer it connects with wifi, but as soon as unplug the usb, wifi is lost. Is this a Yosemite problem? It worked fine before the update.