iTunes can't connect to Nike since i upgraded to 12.1.1.4

I updated my iTunes from v11 to version 12.1.1.4 (64-bit for Windows 7) over the weekend on my work laptop and home desktop.. Since then, I have been unable to sync my runs from my 7th gen iPod nano to Nike+, from either computer. I can connect to the Nike+ website just fine from a web browser or via Nike+ app on my phone (connecting via wifi or 4G). is this a bug in the app or is there something that I need to go to make it work