Lightroom: Export as a catalog backup is not completing. Get the message (Lightroom has stopped working.

  • 1
  • Problem
  • Updated 3 years ago
  • (Edited)
I run a (Export as a catalog) for all photographs on a weekly basis for backup purposes. With my current volume, the job takes close to 7 hours, I run it overnight, and upon completion have 3 folders, catalog, images, and previews. Since some previews are missing, the job usually lists (Missing previews) to be acknowledged as the last step before ending normally and updating the (Previous Export) total. For the past month, the process ends with what appears to be the (missing previews) screen but I get the message "Lightroom has stopped working". My backup drive has all of the usual 3 folders and everything appears to be OK except that the previous export number does not get updated. Has anyone experienced this and/or is there a fix for this? The fact that the export does not terminate normally makes me nervous.
Photo of Larry Lato

Larry Lato

  • 11 Posts
  • 1 Reply Like

Posted 3 years ago

  • 1
Photo of Paul Kleczka

Paul Kleczka, Employee

  • 44 Posts
  • 5 Reply Likes
Hi Larry-

What exact options are you checking on export? Are you selecting "Export Negative Files?" If so, are any of the files in your catalog offline or missing at the time of export? There is a known issue if you have too many offline files Lightroom will try to build a dialog box reporting an error that includes a single message for each offline photo. The creation of this error dialog can crash Lightroom if there are too many error messages within it. When this occurs, the export as a catalog does complete correctly- obviously without the negative files that were offline.

Does the export as a catalog succeed if you don't have any of the export options checked?

Thanks

-paul
Photo of Steve Sprengel

Steve Sprengel, Champion

  • 2611 Posts
  • 333 Reply Likes
Try it once without copying the images just the previews, and try it once without copying the previews just the images, and see if either has the problem. That should give you a good idea if it is the previews or the images or something else.

Personally I'd never backup the previews because they can be generated, again, as needed, but perhaps you have time constraints that makes on-the-fly generation after recovering from a back up impossible to live with.

I would guess that LR is running out of some resource when keeping track of what previews are missing or perhaps in telling you the long list of what previews are missing, and it doesn't really matter to whether the backup is ok or not, but doing the experiments above should help confirm one way or the other.
Photo of Larry Lato

Larry Lato

  • 11 Posts
  • 1 Reply Like
Thanks all for your replies. FYI, no settings have been changed between the last time it worked normally and the current issue. Also, all files are resident on my 1 TB hard drive so there shouldn't be any offline cause. As far as the (keeping track of previews), in the past I used to have 3-4 pages of missing previews which over time have been cleaned up. Perhaps there is a corrupted preview?
How would I delete and then rebuild all my previews? Just maybe that would correct the problem.
In the meantime I'll double check the (negative file) issue brought up by Paul and try the test suggested by Steve. Thanks again, I'll be sure to post the results. Being this is not my "Day Job", may take a couple of days to get completed.
Larry
Photo of Larry Lato

Larry Lato

  • 11 Posts
  • 1 Reply Like
OK, Thanks to Paul and Steve for their suggestions. Problem still exists but I have narrowed down what is happening. The normal workflow before this problem began was (Copy Catalog, Copy Photos, Copy Previews, Done). By trying separate runs as Steve suggested, for photos only including negative files everything works fine and on my backup drive is a catalog backup and photos folder. If I backup previews only, that is where the problem occurs. See the attached screen print image, after copying the catalog and previews, the program starts doing "Copying catalog to final location". I don't recall this happening before and it doesn't make sense as a catalog backup was already created. Before this problem started, previews were the last to be copied and the task would complete.
This "Copying to final location) task runs for about a minute and I get the sense the program is freezing up, then I get the (Quit working) message. BTW, the output of this process is still a catalog folder and preview folder, I appear to have my work but the task will not go to normal completion.
Photo of Paul Kleczka

Paul Kleczka, Employee

  • 44 Posts
  • 5 Reply Likes
So it sounds like something is happening while trying to copy all of the previews.

I know it doesn't solve the problem you are talking about- but as Steve suggested earlier- you may want to consider not even backing up the previews as they can be regenerated from the originals and can take up significant space.

If you don't want to take that route, I would try discarding all of your previews and regenerating from scratch with the previews. I'll send you a private email with some details.