This is really frustrating... I opened CS6 to my laptop, as usual but I enlarged the frame in my bigger monitor. When I dragged it back to my laptop, I don't have the Red, Yellow and Green buttons on the frame of Photoshop anymore. I can't move the black frame. It will only let me dock the actual file I'm working with, not the entire Photoshop frame. HELP!!!! I've tried everything.
Try selecting Window/Workspaces/Reset Essentials (it may not say essential, but select the line that starts with 'Reset').