Participant

P: PS 27.4 & 27.5 (beta) Changing channels in Curves crashes PS with error: Could not update smart object files because of a program error (f376f9.749).

Forum|Forum|5 months ago
February 21, 2026
56 replies
1856 views

Hi everyone,

Photoshop 2026 (v27.4) on Windows gives me this error constantly when work with curves (i didn't try other tools, so i hope this is the only one): "Impossible to update advanced objects because a program error has occurred (f376f9.749)".

Sorry, my Photoshop is in Italian.

Anyone else seeing f376f9.749 on Windows lately?

Thanks in advance!

Pinned Reply By Srishti Bali

Hi All,

We have addressed this issue in our latest release. Please update Photoshop to version 27.9.1 and check if the issue is resolved on your end.

If you still experience the problem after updating, please let us know and we will investigate further.

For details on bug fixes, improvements, and new features included in this release, please refer to the following link:

Show previous replies

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RUWcreatiefstudio

Participating Frequently

It looks like that after the latest Camera Raw update, the problem is solved, at least for me. Curves just work fine now, I no longer get error messages and Photoshop doesn't freeze anymore.

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rahul_2025

Participant

The same issue i have been facing since I updated my ps to 27.4.0. What is the way forward? Shall I wait for the solution or downgrade it ? Please also suggest the stable downgrade version.

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AxelMatt

Community Expert

@rahul_2025 Do you have try to disable the Modern UI?

Goto the Photoshop preferences on the "Technology Previews" tba in the dialog.

Uncheck the option "Enable Modern User interfaace".

My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 25H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI

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AxelMatt

Community Expert

Try to disable the Modern UI. Goto the Photoshop preferences on the "Technology Previews" tba in the dialog.

Uncheck the option "Enable Modern User interfaace".

My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 25H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI

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RUWcreatiefstudio

Participating Frequently

@AxelMatt tried that but doesn't work for me. Still getting the error.

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AxelMatt

Community Expert

Ok. I can’t reproduce this on my machne and as far as I read here the Adobe couldn’t already reproduce this. But they’re working on it to find a solution.

It seems an issue that depends on specific configurations.

My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 25H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI

MassC

Legend

Hey @Polacofede,

I’ve promoted your post to its own thread since your issue may be different from the one you originally commented on.

I tried to locate a crash report using the email address associated with your community account, but I wasn’t able to find one. Were you able to submit a crash report? If so, please PM the email address you used to submit your crash report.

If not, you can find instructions on how to submit one here:
https://helpx.adobe.com/photoshop/kb/submit-crash-reports.html

Best,
CMAss

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Polacofede

Participating Frequently

Hi!

Ok thanks.

PS does not crash, it just throws an error message and freezes or becomes irresponsive, even if i wait a lot of time, it does nothing. So you are forced to kill the process.

the “how to solve it” button takes you to:

https://helpx.adobe.com/en/photoshop/desktop/troubleshoot/file-format-issues/resolve-program-error-while-saving-files.html?trackingid=C12Y2WS7&mv=in-product&mv2=ps

So the issue arises when for instance you modify a channel and then you attempt to modify other channel. And is not while saving the file, at least not intentionally. In fact i can do modifications and save the file without issues.

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Polacofede

Participating Frequently

I downgraded to PS27.3.1 from latest one PS27.4 and i dont see that issue now.

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Polacofede

Participating Frequently

im having this very same issue in windows since last PS update.

doesnt mind if im at 100% or 33% whatever. Also for instance it works when changing the green channel, then if i try to change the blue one, it crashes. But i would say the crash it quite random. Is a real pain. so it was never fixed?

Photoshop 27.4

Amila323654270b12

Participant

I got same problem guys. This is so disappointing issue. Can we downgrade the photoshop version?

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RUWcreatiefstudio

Participating Frequently

@Amila323654270b12 yes you can. Go to apps in your creative cloud app. Click on the three dots below Photoshop. And then you can choose another (older) version.

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RUWcreatiefstudio

Participating Frequently

It happens to me as well. Everytime I try to change to channel to blue. Photshop froze, have to use taskmanager to shut down Photoshop. I see the original message is already 18 days old. I hope this gets fixed soon. Turning off modern preferences did not work for me.

Inspired Kindergartens

Known Participant

You can use the drop down menu Image > Adjustments > Curves - still throws an error but PS is still responsive and the tool works ok afterwards

Inspired Kindergartens

Known Participant

For me it is changing to another channel after making two adjustments and after selecting OK in the dialog window PS is unresponsive.

Open image (png)
Add curves adjustment layer
Set two points on any channel
Change channel and error
Click “OK”
App is no longer interactive

Curves Dialog throws error but PS is recoverable

Vophi-Studio

Participant

Hi everybody, i found a temporary solution.

> Filter/Filter camera Raw/on the right panel you have Curve solution and there is no crash.

not so powerfull than the original tool but it can help.

Brgds
Vophi

Claire H.

Community Manager

@Vophi-Studio While the team continues to investigate this issue, we really appreciate your sharing your workaround. We will update this thread once we have published a fix. Thanks!