I have a strange problem. When using Nikon Capture in the LCH panel, I cannot seem to set a curve point that is actually attached to the curve. The Master Lightness channel works as expected, but in all others (Color Lightness, Chroma, etc.), if I click the "Set Curve Point" button and move the eyedropper over my image, when I click in the image a point is created in the LCH Panel, but when I go to move that point I can place it anywhere in the panel but it doesn't affect the curve (or line). Its not attached to it and doesn't affect it. I know I have done it before but I don't see what I'm doing differently now. What's going on?