my computer crashed last night while I was using Lightroom. Since then I cannot re-open the program to resume work. I keep getting the following message: "The Lightroom catalog names "Lightroom 4 Catalog" cannot be opened because another application already has it opened." Can some one please help me to resolve this issue?
Navigate to where your Lightroom catalog is. If there is a .lock file there, delete it.
Normally the lock and journal files are deleted on exit. The lock file is there to prevent several instances of Lr opening at the same time.
With Lightroom closed, it should look like this, .lrcat and .lrdata only:
Thanks for that twenty_one. I didn't have a .lock file, but I did have a 'journal' file which I have now deleted. I am now left with the following:
Lightroom 4 Catalog Previews.lrdata
Lightroom 4 Catalog
The only problem is, the second one is not my complete catalog. It only contains the first set of photos I imported when I was trying out the trial version. Is there any way that I can recover my other catalog, and if so, how???