How to close one two LR catalogue

[mtakeda]

My computer went down and I had to reformat it and the backup of LR catalog was made on the external HDD where other catalog is residing. When I tried to open backup catalog the LR says

The Lightroom cat " so and so" cannot be open because another application already has it opened. Quit the other copy of Lightroom before trying to launch.

Please advise what to do.

Thanks for help.

[aduke]

If you look at the folder that contains the catalog, you will find a file named  "catalog name".lrcat. That is your catalog file. You will also find a file named "catalog name".lrcat.lock.  This second file  stops LR from opening the catalog.

Just delete or rename the .lock file and you should be able to open your catalog.

Alan

[mtakeda]

Thank you so much. My problem is solved! I can not thank you enough.