Catalogue Lightroom 5 cannot be opened because it is already opened in another application?

No matter what I do, I can't get Lightroom 5 to open because of this statement "the Lightroom catalog named"lightroom 5 Catalogue"cannot open another application already has its opening." Leave the other copy of Lightroom before trying to launch. My choices are "Choose a different catalog" "continue" and "Exit".

There are no other programs running. Problem still continues with computer security products uninstalled. There is no catalog 'different '. I tried "open a new catalog, but any attempt to move the files to a new catalogue were doomed to failure. I'm about to uninstall and reinstall, but I'm going to lose my history of changes to my library. Someone at - it advice.

This normally happens after an abnormal termination of Lightroom (ie. an accident).

In the directory where your catalog is stored will be a file with the same name as your catalog, but with the extension. LOCK.  yourcatalogname.lock.

Rename this file to something else and then try to start Lightroom.

Tags: Photoshop Lightroom

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