Need some help on this one. I want to upload a file to Lightroom 5 and it will not work. The program opens the file but then says "Preview unavailable for this file". Since I had no problem uploading other photos in this catalogue, I don't understand why Lightroom cannot find these particular photos. I checked my backup hard drive and they are definitely there and I can open them in Canon preview program or even the Mac preview program with no problem. Any help?
Which camera? The 7D Mk II?
Sorry it took so long to respond Keith. I used a Canon T3i at the time. All other photo files easily uploaded to Lightroom from the same trip except for this one set of files.