I'm having the same issue, and this is the first time I've installed Photoshop CC. If I try 'New' I get the dialog for size, etc. but after hitting OK it just disappears. Trying to Open gives me the picker dialog and then it just closes after I select something.
Win 8.1 / nVidia Titan GTX / 16GB RAM with plenty free, all updates done, etc.
I've tried reinstalling Photoshop (and nuking all of AppData).
Nothing works. What the heck?