Since installing Sonoma, Preview says "The document ... could not be saved" after editing.

I have the same issue. But it isn't just Preview, Preview, GIMP, and Photos all are unable to save an edited image. They all give the same error.

TL;dr I am having a similar problem and found the solution for me is to use 8 bit grayscale for all black and white scans that are photos or negatives.

My story follows:

I am scanning old black and white negatives with an epson scanner set for 16 bit grayscale. Sonoma Preview Version 11.0 (1056.5.1) can open and view the scans but refuses to save them with any edits. All I want to do is rotate them or flip them since the scanner scans negatives backwards and sideways if they are landscape view. After exporting them as-is and reopening them Sonoma Preview still refuses to save them so that didn't work.

Ventura Preview Version 11.0 (1044.2) opens views and saves after rotation so I can always use that on my MacBook Pro to do the editing but I shouldn't have to. Also, Monterey Preview Version 11.0 (1033.4.1) works just fine. I have this running on my scanning station and I can make the edits there if needed but again, I shouldn't have to.

So, I have used GraphicConverter (great program that I plan to buy after testing) to open and flip them or rotate them and it saves just fine.....hmmmm must just be Sonoma Preview Version 11.0 (1056.5.1) has a bug. All of these recent negatives were scanned with 16 bit gray output. Hmmmm.

The Solution for me: I then tried using GraphicConvert to change them to 8 bit gray and voila...Sonoma Preview Version 11.0 (1056.5.1) will open edit and save them just fine. So, I just scanned a negative using 8 bit grayscale output and sure enough, Sonoma Preview will save them just fine after flipping or rotating.

So, for me anyway, the answer is to only use 8 bit gray for all black and white negatives and photographs if I want to continue to use Preview to manipulate them. I never saw this problem until I got a new scanner and was messing around with the output setting and chose 16 bit gray for a few of my scans. Apparently, all my old scans from my old scanner were already 8 bit grayscale.

I am hoping this helps someone else with this arcane bug. See the screenshots below for the info from Preview.

Happy Day!

This one will NOT save:

This one WILL save:

I have a similar problem, I use Preview ( version 11.0 [1056] ) to add script to my photos. Since Sonoma........

Preview is not accepting new photos, it will not open at all with them !!

The work around I found is to shut my computer down and restart in a few minutes . If trying to

open a photo , then It must be the first thing I do . When I come back with another photo after doing something else , it again does not work .

Is there a more efficient work around ??

Preview Version 11.0 (1056)

MacOS (Sonoma) 14.0 (23A344)

I am experiencing the same problem. I was able to export a JPG to PDF from Preview and then export from Preview back to JPG (which is a pain) but not resize it (which is what I was doing). I was able to resize the JPG using ImageMagick from the Shell prompt, so it's not a defect in the JPG format. It seems clear enough this is a MAJOR defect in the Preview app that comes with Sonoma. Surprizing that Apple has not fixed this defect in over a month.

I manage a save but only jpeg. However cannot resize as Preview is all over the place - couldnt make any sense at all. Notice my couldn’t wasnt corrected - thats becasue spelling is another of the “it just works” that doesnt!

I found a workaround where if I scan as a PDF, I can edit and save. I can then export to PNG and edit and save the PNG. If I export to JPG and edit the JPG, Preview forces me to convert the JPG to PNG to save the edits.

Okay, I don't know if I am just the lucky one, but in the last couple of weeks or so every thing has been back to working fine, in Preview and iPhoto , at least for my purposes. Other than keeping updated I haven't done anything special. I can edit photos , add text and save.

Wishing everyone the same !!!

Same issue here, in Preview, via Macbook Pro 14" M2, Sonoma 14.1.2 : cannot save or export any formats, except PDF. And can export from PDF, back to JPEG, which then can be saved with changes in Preview. This issue happens only with greyscale. I also scan via Brother's "iPrint&Scan".

I can scan greyscale via Apple's "Image Capture.app" and edit in Preview and save, so there must either be a conflict between Brother's app (which is an Intel app and not native Apple Silicon app) and Preview. I can save in GIMP, but the resulting JPEG can't be edited and saved in Preview.

If any of you, can't save edited files (except PDF) and don't use Brother's "iPrint&Scan", then this is a Apple Preview bug- otherwise it's a Brother issue.

Before I report to Apple, please respond, if you don't use Brother's "iPrint&Scan" and have this issue and tell which scanning software you use. If you do use Brother's "iPrint&Scan", try using "Image Capture.app" and scan as greyscale, edit in Preview and save. Report back!

Just a heads up. I updated OS and app as follows:

Sonoma 14.1.2 (23B92)

Preview Version 11.0 (1056.2.4)

Since then, it has worked OK. I have not been dealing with scanned documents, but saving as various file types works.

Same for me, i.e. Preview cannot save any changes. The issue appears for all black and white images using Generic Grey Gamma 2.2 Profile. If I open with some other thirdparty app and save with some other profile, Preview can handle the file just fine.