My computer crashed with lightroom open, since restart I get a msg 'LR encounted an error when reading from its preview cache and needs to quit'
I'd appreciate any suggestions
In the same folder as your catalog file is a subfolder whose name ends with Previews.LRDATA. Delete this subfolder. Do not delete your catalog file (whose name ends with .LRCAT)
Many thanks for your help, at lease the LR is working now. How do I rebuild previews and smart previews or will this happen automatically?