I'm having troubles converting my raw files from Nikon D5200 (NEF) to DNG. I tried using Lightroom 4, but it didn't identify the folder containing the files. So i downloaded the latest DNG converter but that too didn't identify the files kept in the folder location. So I downloaded DNG converter v7.3 for D5200. It identifies the folder and files; but it is giving me parsing error on trying to convert files. I'm running Windows Vista Home Edition SP1. Kindly advise. Thank you.