The catalog is a database file that keeps track of where your images are on your computer and the adjustments that you have made to those images using Lightroom. The catalog does not contain your images. It is normally located in your Pictures folder, then a Lightroom folder, and has the extension lrcat. The catalog is automatically opened and closed by Lightroom as you use the program. Under normal circumstances the catalog works in the background and you shouldn't have to worry about where it is located or what it is doing. Why do you need to find the catalog?
A catalog is a database that tracks the location of your photos and information about them. When you edit photos, rate them, add keywords to them, or do other things to photos in Lightroom, all those changes are stored in the catalog. The photo files themselves are not touched.To create a new catalog :-
- Open Lightroom
- From File (Menu bar) select New catalog,
Please go through these links Adobe Photoshop Lightroom Help | How Lightroom catalogs work and How to create and manage catalogs in Photoshop Lightroom
Lightroom 4.4 will not open. A window pops up with a message: The Lightroom catalog named "Lightroom 4 Catalog" cannot be opened because another application already has it open. Quit the other copy of Lightroom before trying to launch. Choices: Choose a Different Catalog / Continue / Exit
I've tried to figure this out. I am clueless.
- With Lr closed go to the location where your catalog resides(By default it is Pictures/Lightroom)
Delete the .Lock file with the same name as your catalog.For instance in the Picture below it is Lightroom4 catalog.lrat.lock
In your case it will be Lightroom4catalog.lrcat.lock
- Restart Lightroom
Let us know if that helps
I've searched for the .lock and nothing.
Where did you looked for it?
Check where your catalog is saved.(By default it is located :-Pictures/Lightroom)
Thanks to your accurate directions, I found it and it opened and is working. All work and presets are still there.
What would have caused this in the first place? Thank you. Thank you. Thank you. Tears of joy!!!
Thank you. I got it up and running. Not sure why or how the problem occurred in the first place but it opened and all is good. Hope it remains good. I'm not super techie.
Lightroom prevents the catalog to get corrupted/being used by other Applications.So it creates this .Lock file,Which sometimes causes Problems like these.
Glad to know it is fixed