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DPP and MacOS Tahoe

  
 
Badger
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p.1 #1 · DPP and MacOS Tahoe


I have upgraded to an Apple M4 Macbook and have installed DPP 4.21.10.0. One of the key hopes for the new machine is that it processes photos more quickly, along with having an improved screen (I bought the nan-texture option) and a lot more storage.

I have come a cross a major problem in that I cannot delete files from DPP. Whether that is move to trash for single images or marking images for deletion under Quick Check, neither actually moves the files to the bin. I can move files into Trash from Finder, so the permissions at operating system level seem fine.

My previous Macbook, an M1 on Sequoia works fine.

I have seen this problem documented previously, see link below, on Canon's website, the difference is that providing full disk access does not solve the problem and the option to add DPP to Automation is not available.

https://community.usa.canon.com/t5/Camera-Software/Unable-to-delete-rejected-images-in-DPP-on-macos/m-p/407455

Having worked through the problem with Apple, including a complete reinstall of Tahoe, my next step is to contact Canon.

Input most welcome.



Dec 26, 2025 at 07:37 AM
Tom_W
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p.1 #2 · DPP and MacOS Tahoe


Interesting - I have Tahoe, but my version of DPP is 4.20.30.0. When I clicked on update for DPP, it said no updates are available. Can you drop back to that version of DPP? I'd hate for you to have to reinstall the operating system on the new Mac.

I did just do a test "move to trash" and it worked fine.



Dec 26, 2025 at 09:09 AM
EB-1
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p.1 #3 · DPP and MacOS Tahoe


It's not unusual for the latest DPP updates not to show within the software although the later versions will be installable and work fine. You should always go to the Canon site and check the latest options even if not shown under the older OS.

EBH



Dec 26, 2025 at 10:27 AM
AmbientMike
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p.1 #4 · DPP and MacOS Tahoe


I'd rather not be able to delete photos from DPP.




Dec 26, 2025 at 11:41 AM
Gochugogi
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p.1 #5 · DPP and MacOS Tahoe


DPP has been slow to update and fix bugs as long as I can remember, but Canon will get around to it eventually. Maybe downgrade to a prior version of DPP and see if that fixes the problem. With that said, no problems running 4.20 on my Mac Studio M4. Sill a slow program but faster than it was a few years back. LR and Apple Photo dance circles around DPP.


Dec 26, 2025 at 11:53 AM
AmbientMike
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p.1 #6 · DPP and MacOS Tahoe


Ive certainly had issues with DPP speed, but currently it seems pretty fast. A lot of my speed issues probably related to a slow computer, in general. Using lower mp body lately so thats faster but could have a faster computer, too

I don't really delete photos, myself



Dec 26, 2025 at 12:01 PM
EB-1
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p.1 #7 · DPP and MacOS Tahoe


The speed of the DPP RAW conversion is relatively slow because it is not GPU accelerated. They will offer AI processing, but not for free. All of that is not the OPs issue it appears.

EBH



Dec 26, 2025 at 01:13 PM
Badger
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p.1 #8 · DPP and MacOS Tahoe


Thanks all for the input.

As suggested, I have installed a previous version - 4.19.31 was all I could find. Doing this required the installation of Rosetta, which I think means 4.19.31 is actually designed for an Intel based Mac and Rosetta makes the translation to Apple silicon? Whether this makes the application even slower is yet to be determined.

In any case, when I tried the delete function it asked for access to Finder. I can now see that DPP is registered under Automation, which is why it works correctly

Next step is to upgrade DPP to see if 4.21.10 works. My guess is yes, because it should inherit the permissions from the previous version. @Tom_W and @Gochugogi - I would be interested to know which came first for you - DPP or Tahoe? If my logic is correct, then it was DPP

Edited on Dec 29, 2025 at 10:59 AM · View previous versions



Dec 27, 2025 at 08:17 AM
chrisw148
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p.1 #9 · DPP and MacOS Tahoe


I think I am in the exact same position -- M4 MacBook, Tahoe, DPP 4.21.10.0 and cannot delete photos from within DPP. Full disk access seems to have no effect, and DPP is not visible in the Automation screen to give permission to. I haven't seen a pop-up asking to enable any relevant permission to DPP either (I did see and grant access to a number of folders). There might be the briefest change of focus to finder after attempting to delete a photo.

One thing that I think I see is an error from Finder in the console logs when I try to delete a file:

"Since sending application [sess=<> pid=993 uid:<> g:<> pV:<>] is not permitted to send this AppleEvent to this process, returning an errAEEventNotPermitted reply."

The pid of 993 corresponded to DPP.

It does seem like this could be related to (automation?) permissions. I'm not sure there is any way to grant this permission directly so I am very interested to hear how your experiment goes.

Chris




Dec 28, 2025 at 05:38 PM
 


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Badger
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p.1 #10 · DPP and MacOS Tahoe


I have since installed 4.21.10. As suspected, the later version has inherited the permissions of 4.19.31 and I am now on what I think is the latest version.

Is Rosetta required to run 4.21.10 - don't know. Is Rosetta still on my machine as legacy software and are there any implications of that - don't know.

Hope this helps and thanks for all the comments/input



Dec 29, 2025 at 10:59 AM
jrhoffman75
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p.1 #11 · DPP and MacOS Tahoe


4.20.20 added native Apple Silicon support.


Dec 29, 2025 at 12:01 PM
Badger
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p.1 #12 · DPP and MacOS Tahoe


Thanks @jrhoffman75. Do you know where I can download a copy of the DMG file? Would be willing to try to install 4.20.20 to see if it manages the process of getting DPP into Tahoe's Automation settings.


Dec 30, 2025 at 05:09 AM
jrhoffman75
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p.1 #13 · DPP and MacOS Tahoe


Badger wrote:
Thanks @jrhoffman75. Do you know where I can download a copy of the DMG file? Would be willing to try to install 4.20.20 to see if it manages the process of getting DPP into Tahoe's Automation settings.


It looks like Canon is no longer keeping older versions of software on the support sites.



Dec 30, 2025 at 05:50 AM
chrisw148
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p.1 #14 · DPP and MacOS Tahoe


@Badger, that's an interesting result! Did you uninstall 4.21.10.0 before installing 4.19.31? If so, did you just drag the application to trash or anything more extensive in terms of library/system files?

FWIW Get Info from Finder on 4.21.10.0 shows it marked as a Universal application. There's a checkbox to "Open Using Rosetta". I would guess that unless the checkbox is selected then 4.21.10 will run natively using apple silicon. There may be something visible in Activity Monitor too from what I see but don't know for sure (Rosetta not installed yet).

Perhaps unnecessary, but I just punted on Rosetta for a different app with similar thoughts trying to keep clutter out of a fresh clean install. Doesn't look like that will last for long.



Dec 30, 2025 at 09:47 AM
AmbientMike
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p.1 #15 · DPP and MacOS Tahoe


jrhoffman75 wrote:
It looks like Canon is no longer keeping older versions of software on the support sites.


The Canon site senses your OS but if you click on an older OS you might be able to. For instance, I think they still have 3.15 updater on there. Especially if you look on an older body page i.e. 30D on the 3.15 updater (granted in that case you might need a disk or .iso file + software to install DPP 3 to use the updater.)



Dec 30, 2025 at 11:22 AM
Badger
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p.1 #16 · DPP and MacOS Tahoe


chrisw148 wrote:
@Badger@, that's an interesting result! Did you uninstall 4.21.10.0 before installing 4.19.31? If so, did you just drag the application to trash or anything more extensive in terms of library/system files?

Perhaps unnecessary, but I just punted on Rosetta for a different app with similar thoughts trying to keep clutter out of a fresh clean install. Doesn't look like that will last for long.


No, I did not uninstall. I wanted to check if there would be a clash, or if I would end up with two installations. Point being, I was trying to establish what the baseline and process would be should I need to do another fresh installation.

As for rubbish accumulation on our machines, not surprised, just disappointed.



Dec 31, 2025 at 02:02 AM
chrisw148
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p.1 #17 · DPP and MacOS Tahoe


Ok, understood. Thanks so much to you and others for posting about this and finding a workaround.


Dec 31, 2025 at 09:17 AM
Z250SA
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p.1 #18 · DPP and MacOS Tahoe


To perhaps clearify: not being able to delete files from DPP is not a Tahoe issue. As I generally dont fix things that work, I have not ?-graded to Tahoe. And I cant delete images , which is no biggy, perhaps a smally, yes. It did not work with the previous and not with the 4.21.10.0 I upgraded to a few days ago thanks yo yhis thread. On a Mac Mini M4 Pro.

Not being able to easily delete images is not necessarily too bad a thing. I have, apparently, done one disastrous deletion about a decade ago. Could not be anyone else, but I was not aware. Obviously...

Tried a workaround that is ok for me: Rate the baddies as Rjected, sort according to Rating, check them and rename them "Rejected". Once that name occurs in any map with image, few misstakes should happen. Not as easy as it could/should be perhaps. But I wont loose 400 sharp images of tandem-flying eggs-into-the-water-laying-dragonflies again either. This is a poison I can live with, perhaps even prefer.

If a culling procedure will include many thousands of images, the rating-renaming-etc is just a minute part of the total process.

And 4.21.10.0 opens the images much faster than previous versions. Good start of a session!



Jan 03, 2026 at 02:23 PM







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