For some reason I have set up my laptop to convert all raw files to dng files upon importing the files to my hard drive using lightroom to importing them onto my system. Now when I go to work in on some of those raw files in Olympus Viewer 2, and then do not come up. Anyone have any idea of what setting I have mistakenly set and how can I reverse this little problem. My desktop is set up to convert files onto my system with lightroom and they are not converted, but for some reason my laptop is giving me problems. Also is there an advantage in working with dng files over working with the raw file without converting it?