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New Member
Sep 13, 2020
Lightroom Version
Lightroom Classic version 7.4
Operating System
  1. macOS 10.13 High Sierra
I am unable to open my Lr catalog, with the following error message: Unexpected error opening catalog. The catalog could not be opened due to an unexpected error. I have the options to 'try again', 'quit' or 'choose a different catalog'. I am able to open another catalog, or create new catalog's, but my usual catalog I always use is unable to open.

I have just done a Time Machine back-up and went to open Lr to this error message. There was a lock file which I deleted, to no difference in the error message/unable to open catalog.

Has something changed in the catalog file when I have done a Time Machine back-up?