I received the following error message - "Lightroom encountered an error when reading from its preview cache and needs to quit. Lightroom will attempt to fix this problem the next time it launches". When the program is launches, I get the same message again and the program crashes. I un-installed the probram, downloaded the installation program again and re-installed. I still get the same problem. Any suggestions?
Could be the Previews.lrdata file which stores the previews? How about moving it out of it's existing location and see if you still get the error.
Now it shows that previous files are empty, all the DNGs are gone.
Previous Files and Previews are different things.