Photoshop :: CC Window Is Solid Black On 2nd Monitor?

Photoshop CC 14.0 x64 / Mac OS X 10.8.4What kind(s) of image file(s)? Affecting PSDs and JPGs. Not PNGs, those are workingIf you are getting error message(s), what is the full text of the error message(s)? No error message What were you doing when the problem occurred? Setting up new monitor.Has this ever worked before? No and yes, monitor is new but, I still have Photoshop CS6 and that works fine.What other software are you running? At the moment: Chrome, AI, Calendar, Textedit, and System Preferences.Tell us about your computer hardware. MacBook Pro with 15" Retina display (set to the "More Space" setting), 8GB RAM, 2.4 GHz i7, 172GB free space on the SSD. Monitor is Hanns.G HE225DPB 1920x1080 at 60HzHas this ever worked before?

As I drag the window back and forth between the external display and my laptop display, the previous state briefly shows. When I drag it to the external monitor it looks ok for a split second in vertical bands that refresh to solid black. Same when I'm dragging the window back, the window remains black on my main laptop monitor until it refreshes back to normal, in the same vertical-band fashion. The frame of the window, including rulers looks ok, but the image area, including the canvas color turns black. This blackness can be captured in a screenshot.

On the PNG that is working, I do get some black as the image resizes between displays (stays at 100% but on the lower res monitor it doubles in size). In CS6 the image does not resize, the % changes (16.67 on external, 33.33% on laptop) and remains approximately the same size.
 
Perhaps this is more of a bug than something I can do anything about, but I am unable to login to Photoshop.com. I get an "it is no longer possible to create an account" message, even though I already have an account.