I found out what the problem was. My card reader was not working properly. I replaced my old card reader with Lexor USB 3.0 and was able to see all the old formatted photos that were on my card, EXCEPT for the ones I wanted to recover. Apparently the photos I took afterwards over wrote those particular files. In any case RescuePro works fine with larger D800 NEF files. Also, I have to say the Lexor USB 3.0 dual slot card reader is wonderful! My downloads are much faster now.