Color Eyedropper Tool Suddenly Not Working in X7

Hi, I've been using my eyedropper tool nearly everyday for years and now suddenly the tool doesn't work! When I click on it I get a small blank menu next to it which does nothing. The attributes eyedropper seems to work, but I never use that one. I haven't changed any settings, so not sure what happened all the sudden. I will include a screen shot. Any suggestions or work arounds??? Thanks!