Something screwed up Zune wireless sync... help?

New programs installed in the time period I have been having this problem: PowerDVD 12 (which I put on to take advantage of 3D BD viewing on this PC, and I've uninstalled to test) and Teamviewer 8 (since uninstalled).

Problem: My Lumia doesn't sync via wireless. And every 10 minutes I get a device installation error (Zune Wireless).

But: My Zune HD syncs. An old Omnia 7 I dug out and tried syncing also works. So just the Lumia.

I've tried uninstalling Zune and reinstalling. All that's done is to lose some of my album covers.

Any ideas?