7 Replies Latest reply on Oct 20, 2014 9:59 AM by JimHess

    Unable to open Lightroom 5 catalog on PC


      I'm unable to open my Lightroom 5 catalog.  A message appears stating "Lightroom 5 catalog cannot be opened because another application already has it opened".   In reviewing similar questions on the forum it looks like this might have been caused when my computer shut down suddenly when Lightroom was still open.  A response to a similar previous question suggested looking for the file with a .lock extension and deleting it or renaming it.  I checked my files and found none with a .lock extension.