Thank you very much, now it's ok
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Lightroom Classic version 5.2
Mac OS 12.3.1
Since upgrading my macOS to 12.3.1,
I am unable to import from my camera card (attached to my computer with usb)
message: “The following files were not imported because they could not be read”
I am unable to import from my internal hard drive to my external hard drive
message: “Could not copy file to requested location”
I am unable to work with images stored on my external hard drive in Develop module
message: “The file could not be opened”
I am able to import from a folder on my internal hard drive to another folder on my internal hard drive
In Develop module, I am able to work with images stored on my internal hard drive
I am able to save Pages documents to my external hard drive
Looks like a buggy day, previous reply disappeared upon posting. On the MACOS, in the Apple Menu, choose System Preferences, choose Security and Privacy, choose Privacy, scroll down to Files and Folders, make sure Removable Volumes is checked for Adobe Lightroom Classic.
Now, probably overkill, but lately some members with new MACOS and new versions of LrC also need to allow LrC to have Full Disk Access. So scroll up to Full Disk Access and add Adobe Lightroom Classic. See:
Removable Volumes is checked.
Apps displayed in Full Disk Access are greyed out
"Apps displayed in Full Disk Access are greyed out'
Unlock the panel, see the link bottom of previous reply.
This seems to have fixed my problems. I'll do more thorough testing and reply again to (hopefully) confirm that this is the solution.
Thank you very much!
Glad it is working. But I should fess up, I completely missed the obvious statement that you have old perpetual LR5.2. (Assuming that you do not mean the Cloudy version as opposed to Classic)
Could you accomplish the following for clarity?
Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut as that is just so much dead space to us non-Techs.
For reference by future readers, Apple changed something in its draconian security rules in Mac OS 12.3.1 and many, many people here are experiencing a range of bad symptoms, requiring LR have Full Disk access (which was never required before). See this article for how to grant Full Disk Access:
I've tested this further and everything now seems to be working well.
For clarity, I am not using Lightroom Classic. I am using standalone Lightroom 5.2
From System Info:
Lightroom version: 5.2 
Version: 10.16 
Thank you to all who helped.
To help others who come here, did you have to grant Full Disk Access or did the issue resolve itself?
I had to grant Full Disk Access
sorry that wasnt clear
Thanks for the clarification.
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Hi, LR classic can no longer locate my catalogue after updating the software on my MacBook Air yesterday (to OS Monterey version 12.3.1).
Does anyone know how I can fix this please?
First, do this: Go to MacOS 'System Settings - Security & Privacy' and add Lightroom Classic to "Full Disk Access". Click on the lock icon to unlock the settings, then click on the plus icon to add Lightroom Classic if it isn't already listed. If it is listed, then just enable the checkbox.
Then, if Lightroom can still not find its catalog, find it yourself manually. Double click on the catalog file to launch Lightroom. You only should have to do this once. From now on Lightroom knows the location of the catalog again.
Hurrah! Thanks so much that has solved the problem.
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I get this message:
The Lightroom catalog cannot be used because the parent folder “/Volumes/Fotos Jorge/Lightroom Disco Externo” does not allow files to be created within it.
Thread moved to Lightroom Classic.
It sounds like you have some kind of permissions problem. The most likely fix... go to System Preferences > Security & Privacy > Privacy tab > Files & Folders (on the left) > find Lightroom and make sure all of the checkboxes are checked.
To build on this, Apple changed something in its draconian security rules in Mac OS 12.3.1 and many, many people here are experiencing a range of bad symptoms, requiring LR have Full Disk access (which was never required before). See this article for how to grant Full Disk Access:
Thank you John. This worked great.