When I open Lightroom version 5.2 a window pops up that says "Lightroom encountered an error when reading from its preview cache and needs to quit" It says it will attempt to fix the problem, but it never fixes. I have uninstalled and reinstalled, and repaired. None of this has worked. Help please!
Go to the folder with your Lightroom Catalog. It's in Catalog Settings in the General Tab, and clicking 'Show' will open the folder. Delete the folder/file that contains the same name as the catalog file, with the suffix 'Prevews.lrdata' or just rename it. Do not delete the .lrcat file. This is the catalog file.