DJ,
The only other thing that occurs to me is that your iPods may be in the same boat as my Vintage iPad One.
OLD iOS version.
Many of my Apps are failing now because my iPad is runnning on iOS 5.3.x and many APPS require a higher revision of Operating System. I admit it sounds a bit lame.
Meh.
If I come up with anything actually useful, I will post back.
You may want to check the Apple forum and see what is being posted -- this may not be an HP thing, although it could be a Windows 8.1 issue of some sort.
Click the KudosThumbs-Up!
It is a nice way to say “Thank You" for the help.
Although I strive to reflect HP's best practices, I do not work for HP.