Just installed Photoshop CC on Windows 8.1, Intel i7, IrisPro graphics.
Then installed the Intuos4 Wacom driver from here: http://us.wacom.com/en/support/legacy-drivers/
Reset my computer, opened Photoshop and my Pen pressure does not work!
So I open the menu "Window->Brush" navigate to the tab "Shape Dynamics" and under where it says "Control = Pen Pressure" to the left it has a Alert symbol.
Looked on forums, didn't find any solutions.
I also installed MyPaint and my pen pressure works on that Open Source app... so I don't understand why its wouldn't work with Photoshop...
This is more of a bug report if anything, unless there is a known solution?