Luminous Landscape Forum

Raw & Post Processing, Printing => Adobe Lightroom Q&A => Topic started by: Akro on October 16, 2016, 06:26:07 pm

Title: Can't open Lightroom Catalog
Post by: Akro on October 16, 2016, 06:26:07 pm

I just got the  following error message.  "Lightroom catalog named "Lightroom Catalog" cannot be opened because another application already has it opened.  Quit the other copy of Lightroom before trying to launch."  However, there is no other copy of Lightroom running.  I am running Lightroom 6.0 perpetual license version.

I've never seen this message before.  Any suggestions would be greatly appreciated.

Title: Re: Can't open Lightroom Catalog
Post by: aduke on October 16, 2016, 06:43:21 pm

The last time LR was run, it did not go through its shutdown procedure and did not delete its "lock" file. In the directory that contains the LR catalog, you will find a file "LR cat.lrcat.lock". You can just delete the .lock file and LR will open.

Alan

Title: Re: Can't open Lightroom Catalog
Post by: Akro on October 16, 2016, 08:24:42 pm

Thank you!  Now I can't find where the catalog is located.  I looked  in "pictures/Lightroom", but I can't find it.  I will keep looking.  Thanks again for the help.

Title: Re: Can't open Lightroom Catalog
Post by: aduke on October 16, 2016, 09:07:44 pm

Try searching for .lrcat


Alan

Title: Re: Can't open Lightroom Catalog
Post by: rdonson on October 16, 2016, 09:30:38 pm

You may also find via Lightroom by looking at the "Catalog Settings".  It will provide a location.

Title: Re: Can't open Lightroom Catalog
Post by: Jeremy Roussak on October 17, 2016, 03:34:15 am

Quote from: rdonson on October 16, 2016, 09:30:38 pm

You may also find via Lightroom by looking at the "Catalog Settings".  It will provide a location.

Tricky, if it can't be opened.

Jeremy

Title: Re: Can't open Lightroom Catalog
Post by: owinthomas on October 17, 2016, 06:41:31 am

Try using alt (pc) or option (Mac) when starting Lightroom, giving you the option to select different LR catalogs, hopefully with their location.

Sorry I'm not with my Mac at the moment and can't remember what is shown when you start LR this way.

Title: Re: Can't open Lightroom Catalog
Post by: Akro on October 17, 2016, 09:16:15 am

Thanks to everyone for the helpful comments.  I found and deleted the "lock" file, and now all is well!  I had absolutely no clue how to solve this problem.  Without your help, I would still be flailing about.  This is a great forum.  Thanks again for the help!!!