Lightroom Classic crashes when trying to quit & back up catalog

[Marie0715]

I have Lightroom Classic on my iMac with Monterey version 12.0.1. Just yesterday, it started crashing when I try to quit and back up my catalog. I tried restarting my computer to see if that would fix the issue, but it did not. I recently got an update notice for Lightroom Classic, so then I installed the update. I now have the 11.4.1 Release, but I am still having the same issue. Has anyone else had this issue or know how to fix it? Thanks!!

[thedigitaldog]

Try resetting your Lightroom preferences, that's the first step to try when LR crashes:
https://helpx.adobe.com/lightroom-classic/help/setting-preferences-lightroom.html
Also see: https://community.adobe.com/t5/lightroom-classic-discussions/important-steps-for-manually-resetting-...

Quit Lightroom Classic.
MacOS: Press and hold the Shift + Option keys.
While holding down the keys, launch Lightroom Classic.
When asked, select "Yes". 

[Marie0715]

Thank you for your advice, but unfortunately, this did not help. This link popped up when I sumbitted the error report to Adobe:

https://helpx.adobe.com/photoshop/kb/troubleshoot-crash-or-freeze.html?trackingid=W2T7JV6Q&mv=in-pro...

That is for Photoshop, but I have tried steps 1 through 6 with no success. I updated to MacOS Monterey version 12.5. Lightroom still crashes whenever I try to quit and back up my catalog. 

This is some information copied from the error report that might be helpful to someone in diagnosing the issue:

Crashed Thread: 0 CrBrowserMain Dispatch queue: com.apple.main-thread

Exception Type: EXC_CRASH (SIGBUS)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Termination Reason: Namespace SIGNAL, Code 10 Bus error: 10
Terminating Process: Adobe Lightroom Classic [1674]

{"app_name":"Adobe Lightroom Classic","timestamp":"2022-08-06 14:00:55.00 -0400","app_version":"11.4.1","slice_uuid":"22a102b1-b839-30f8-9f2b-2be892f802b4","build_version":"11.4.1","platform":1,"bundleID":"com.adobe.LightroomClassicCC7","share_with_app_devs":1,"is_first_party":0,"bug_type":"309","os_version":"macOS 12.5 (21G72)","incident_id":"206F85FC-B082-4EBE-9339-A5768C57081D","name":"Adobe Lightroom Classic"}

[thedigitaldog]

Try logging into another account (you may need to make one): does it still crash?
If you boot into Safe mode (hold down Shift Key at boot): does it still crash?
Have you tried running a free utility like Onyx to see if that stops the crashing?
https://www.titanium-software.fr/en/onyx.html

[Marie0715]

Thanks again for your help. I tried Safe Mode and that did not work. But I may have figured it out. I think my catalog was currupted somehow. I tried logging in as a guest user on my iMac and was able to back up an older catalog. So I was going to copy my current catalog over to a hard drive to open it while signed in as a guest user and see if it would back up. However, when I tried to copy the lightroom catalog file, I kept getting error code 36, "Finder can't copy the file because it can't be read or written." So I tried doing dot_clean in Terminal for that catalog file, and it came back with "no such file or directory." So I'm guessing something is wrong with the catalog. Thankfully, I back up my catalog at every close, so I am only missing one day of work. I created a new catalog for moving forward, and that seems to close and backup fine. 

Any advice on fixing a corrupt lightroom catalog file?

[thedigitaldog]

In some cases, if you contact Adobe directly and request it, they can sometimes (zero guarantees) fix a corrupted catalog. 

https://www.adobe.com/about-adobe/contact.html

[DdeGannes]

Just another thought, follow the instructions from the article at the link below.

https://community.adobe.com/t5/lightroom-classic-discussions/quick-tips-how-to-give-full-disk-access...