When I try to change the colors to a gradient I am not able to change the selected color. 
When I double click on the color slider I want to change, the pop up panel gives me grayed out CMYK sliders. And all of the fill and stroke icons go dark and display questions marks ????.
When I click on the swatch button no swatch colors appear in the panel.
Am I missing something obvious here? I haven't had this issue before today. I am running the latest version of CC on a windows 7 64 bit machine. Please help! I need my gradients! I can't live with out them!