I just received my D7100 and can't get it to let me select the focus point. I have it set to aperture priority, AF-S, 51 points, auto-ISO, RAW, and auto WB, with the mode dial on S. On the top LCD, just below and to the left of the icon showing matrix metering, there is a solid icon with 'auto' displayed. I don't know whether that indicates anything, but I wonder if it somehow means that the camera will choose the AF point(s). The manual says that pressing the OK button while the exposure meter is on will go to the central point, but that doesn't work either. When I half-depress the shutter button, several focus points generally illuminate, and I can control any of the point selection myself. I hope the problem is with me and not the camera, but I can't seem to find the answer on my own. Anyone with a D7100 in hand that can help? Thanks. By the way, I am coming from a D90.