Epson NX420 wireless printing not working

After upgrading to Yosemite, I noticed the printing capability on my NX420 was gone. I get communication errors and a prompt to download software; but after downing, a notice for error downloading. No updates show up via App store.
I have downloaded the software via Epson and installed; but it still doesn't work. My son's i5 iMac running Yosemite is printing fine wirelessly.

Hi @AllysonR , and welcome to the HP Forums!
I see you're experiencing connectivity issues.  I would like to help!
I'd recommend performing a power reset.  Disconnect the power cord from the printer and the power outlet, then wait 60 seconds. After 60 seconds, plug the printer back in. Ensure you plug the printer directly to a wall outlet. Make sure to bypass any sort of surge protector or power bar.
I'd then suggest following this document:
Wireless printing center Troubleshooting Issues
Good luck and please let me know the results of your troubleshooting steps. Thank you for posting on the HP Forums!
Please click “Accept as Solution " if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks" for helping!
Jamieson
I work on behalf of HP
"Remember, I'm pulling for you, we're all in this together!" - Red Green.

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