So i have been using lightroom 3 forever and I got a MK III and I remembered someone told me it needed me to have LR4 to read the files... well I upgraded to 4 and have done 3 sessions now and I went to upload them and my previews say unavailable... whats going on? is it a setting? I shot in raw format and so im waaaay confused why its not reading them
Could you please tell us somewhat more:
Your OS and version?
Your exact version LR?
Your Camera type?