I am using CS5 and have many images that started as NEF files and have been adjusted using Camera Raw 6.7. Some have layers that have been "Flattened" and some have layers still visible. I have tried to open them again in RAW to carry our some further adjustments (best done in RAW). Why can't I open them? I can't see the option to select "Open with Raw" I am sure I have done this before, can anyone help please. I have "Open with Adobe CS5" (default), COM Surrogate 6.1, and Notepad++ that not really associated with image manipulation.