I have updated CC 2015, both Lightroom and Photoshop. I can open Photoshop and can open a photo. Every time I close out a photo, Photoshop crashes with the message, Adobe Photoshop CC has stopped working. It will now close.
David, reset your PS preferences on launch (shift-cntrl-alt) then turn off "Use Graphics Processor" in performance preferences (Edit > Preferences > Performance). Then quit and re-launch the application. That should mitigate the crashes you're seeing when you close files.