Always I'm using the eyedropper tool Photoshop crashes. The same does happen after loading a channel as a selection and changing of the window of channels to the window of layers. I'm using the current version of Photoshop CC on a system of Windows 8. Since lately there are pink areas in parts of the picture (-> image). When I zoom in these areas are gone. These only are seeable with an activated RGB channel. Directly before the crash all channels have a transparent preview.