I have been using photoshop for about 8 years and have today had an unusual problem that I have never before encountered. After scanning a drawing I went into IMAGE - ADJUSTMENTS and on pressing the Contrast selection instead of receiving the contrast bar I got the icon for the "colour choice pipette". I now cannot get out of it and am in a "loop". I turned my computer off and on again but after going back into the drawing and attempting to use the contrast I again received "colour choice pipette". I now cannot use any other function icon without getting a "Warning Bleep"