Sorry no solution for you, just following because I have the exact same issue. Except files that were moving to PS CC earlier today will still go (if I choose the original file-not a copy) Not sure why this happened all of a sudden.
I was using earlier versions of both programs this afternoon when things were working smoothly. But once they stopped the ability to "edit in CC" I upgraded both lightroom and PS CC in hopes it would fix the issue. Nothing.
Beyond frustrated, someone help!
You reminded me of something I had changed yesterday while working that could've caused the issue. So I went and changed it back and voila! Everything is working perfectly and I now have the newest program versions.
So thank you, thank you!!