Sucrose.Commandog.exe - Application Error The application was unable to start correctly (Oxc0000142).

[rexxDZN]

I have had the error in the title before when installing via the MS store. then i uninstalled the ms version and downloaded via github with the ARM64 option.

Now i get this error:

An unexpected error occurred:
Could not load file or assembly 'CefSharp.Core.Runtime, Version=139.0.280.0, Culture=neutral, PublicKeyToken=40c4b6fc221f4138' or one of its dependencies. An attempt was made to load a program with an incorrect format.

In more detail:

An unexpected error occurred: { "HResult": -2147024885, "Source": "CefSharp.Core", "HelpURL": null, "Message": "Could not load file or assembly 'CefSharp.Core.Runtime, Version=139.0.280.0, Culture=neutral, PublicKeyToken=40c4b6fc221f4138' or one of its dependencies. An attempt was made to load a program with an incorrect format.", "ClassName": "System.BadImageFormatException", "Data": { "System.Object": null, "VC Redist Version": "v14.42.34438.00", "CefSharp Checker": { "CefSharp Time Check": false, "Check": true, "CefSharp Time": "0001-01-01T00:00:00" } }, "FullMessage": "Could not load file or assembly 'CefSharp.Core.Runtime, Version=139.0.280.0, Culture=neutral, PublicKeyToken=40c4b6fc221f4138' or one of its dependencies. An attempt was made to load a program with an incorrect format.", "RawStackTrace": " at CefSharp.CefSettingsBase..ctor()\r\n at CefSharp.Wpf.HwndHost.CefSettings..ctor()\r\n at Sucrose.Live.CefSharp.App.Configure() in E:\\MyProject\\Sucrose\\Pro\\Sucrose\\src\\Live\\Sucrose.Live.CefSharp\\App.xaml.cs:line 305\r\n at Sucrose.Live.CefSharp.App.Checker() in E:\\MyProject\\Sucrose\\Pro\\Sucrose\\src\\Live\\Sucrose.Live.CefSharp\\App.xaml.cs:line 219\r\n at Sucrose.Live.CefSharp.App.OnStartup(StartupEventArgs e) in E:\\MyProject\\Sucrose\\Pro\\Sucrose\\src\\Live\\Sucrose.Live.CefSharp\\App.xaml.cs:line 623\r\n at System.Windows.Application.<.ctor>b__1_0(Object unused)\r\n at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)\r\n at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)", "StackTrace": [ { "Method": "Void .ctor()", "LineNumber": 0, "FileName": null, "ColumnNumber": 0 }, { "Method": "Void .ctor()", "LineNumber": 0, "FileName": null, "ColumnNumber": 0 }, { "Method": "Void Configure()", "LineNumber": 305, "FileName": "E:\\MyProject\\Sucrose\\Pro\\Sucrose\\src\\Live\\Sucrose.Live.CefSharp\\App.xaml.cs", "ColumnNumber": 25 }, { "Method": "Void Checker()", "LineNumber": 219, "FileName": "E:\\MyProject\\Sucrose\\Pro\\Sucrose\\src\\Live\\Sucrose.Live.CefSharp\\App.xaml.cs", "ColumnNumber": 17 }, { "Method": "Void OnStartup(System.Windows.StartupEventArgs)", "LineNumber": 623, "FileName": "E:\\MyProject\\Sucrose\\Pro\\Sucrose\\src\\Live\\Sucrose.Live.CefSharp\\App.xaml.cs", "ColumnNumber": 21 }, { "Method": "System.Object <.ctor>b__1_0(System.Object)", "LineNumber": 0, "FileName": null, "ColumnNumber": 0 }, { "Method": "System.Object InternalRealCall(System.Delegate, System.Object, Int32)", "LineNumber": 0, "FileName": null, "ColumnNumber": 0 }, { "Method": "System.Object TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)", "LineNumber": 0, "FileName": null, "ColumnNumber": 0 } ], "InnerException": null }

Important

After having downloaded a wallpaper from the store. and clicked to apply it does apply. however i get the same error and the commanddog is not there anymore. One issue i seem to have is that the settings of when to pause the wallpaper like on battery saving or when application is in focus etc. is not working. The error in title and picture keeps popping up every minute which is very frustrating.

[Taiizor]

The CefSharp.Core.Runtime error has been fixed in the developer build.
If you don’t know how to access the developer version, please watch this video or check the image below:
https://www.youtube.com/watch?v=9N5RqjqgPSM

[rexxDZN]

It’s good that the infinite loop errors aren’t appearing right now, because it means the problem stems from Performance Counters, which I will also fix.

Wait u were correct. I thought the error dialog is related to the second error of not being able to open some wallpapers in stable. I have turned it on and immediately got the dialog in dev build. 🫨

[Taiizor]

Maybe the only thing i can think of is a user error. Of someone immediatly dragging and dropping a gif or video into the library without clicking the respective tool button to add first. because then u get this error:

You can drag and drop any file into the Library, but this only works for wallpapers that were exported from within the application. Perhaps a theme creation window could open based on the file’s extension.

[Taiizor]

It’s good that the infinite loop errors aren’t appearing right now, because it means the problem stems from Performance Counters, which I will also fix.

Wait u were correct. I thought the error dialog is related to the second error of not being able to open some wallpapers in stable. I have turned it on and immediately got the dialog in dev build. 🫨

The main reason is that Sucrose cannot access CPU information — specifically, it cannot do so on ARM64 architecture. I was using a third-party library for this access, and I’m working on a solution. However, I’ll likely implement it without relying on that library, which is why I need a few days — I’ll be restructuring the underlying system from the ground up.

[Taiizor]

It uninstalled without any issues. And it reinstalled with the data kept. Very nice.
Only thing is would've been best if one could immediately download the Dev version instead of the stable.

I assume you have the stable version’s Bundle (Setup) file and reinstalled Sucrose after uninstalling it. Since your settings were preserved, the Update Channel remained set to the developer build. As a result, after installation, Sucrose automatically checked for updates and began downloading and installing the latest developer version.

[Taiizor]

Maybe it needs to be put as a note besides it with: "doesn't affect library wallpapers" and below the library header a note that the user needs to manually backup/copy the files. with a button to open files location.

Clicking the button that shows the library path in the image below will open a window to select a new library location. However, clicking the folder button to its right will open the current library location in File Explorer.

[Taiizor]

Now, when the Performance Counters setting is enabled, the Performance Settings are expected to work properly, and the system metrics provided for Web based wallpapers should also function as intended.

Note: The Battery Saver feature may still be problematic.

[Taiizor]

To help me identify the cause of this error, please do the following:

1. Open Event Viewer.
2. From the left panel, select Windows Logs → Application.
3. In the list that appears, look for the most recent entries marked as Error.
4. If any of them mention Sucrose, right-click that event and choose Save Selected Events...
5. Pick a save location for the file.

Then, please share those saved logs with me so I can analyze them in more detail and work toward a fix.

If you’re not sure how to do this, you can follow the tutorial in the video below — just note that you only need to save the Sucrose-related logs, not all of them: 👉 https://www.youtube.com/watch?v=waI_1Zvkw3M

[rexxDZN]

can't see any mentioning sucrose, and somehow now after turning performence meters i cant see the error popping anymore. buttt the background doesnt pause on any way. not when other app is in focus, fullscreen i cant see if it did, not when battery saver..
cef.evtx.zip

[Taiizor]

Please navigate to C:\Users\<USERNAME>\AppData\Local\Sucrose\Sucrose.Backgroundog and right-click on Sucrose.Backgroundog.exe, then select “Run as administrator.”

When you try to run the application this way, does the same error occur?

[Taiizor]

can't see any mentioning sucrose, and somehow now after turning performence meters i cant see the error popping anymore. buttt the background doesnt pause on any way. not when other app is in focus, fullscreen i cant see if it did, not when battery saver.. cef.evtx.zip

Most of the things you mentioned are handled by an application called Sucrose.Backgroundog, and unfortunately, it isn’t working as expected either. In the logs you sent, I couldn’t find any record related to this application.

[Taiizor]

Also, as another troubleshooting step, please extract the following archive into this directory: C:\Users\rexx7\AppData\Local\Sucrose\Sucrose.Runtime\shared

Microsoft.AspNetCore.App.zip

After extracting, the folder contents should look like this:

Once done, try running the application named Sucrose.Backgroundog.exe located in: C:\Users\rexx7\AppData\Local\Sucrose\Sucrose.Backgroundog

Note: Sucrose should not be running during this process. Please close all Sucrose processes from the Task Manager first.

[Taiizor]

The issue causing Web based wallpapers using the CefSharp engine to not appear full screen relative to the display has been fixed.

[rexxDZN]

yes the not fullscreen issue is now fixed.
but the web media player info isn't

[Taiizor]

The main reason for this is that the Sucrose.Backgroundog.exe application cannot be executed.

[Taiizor]

Wallpaper Title and Description fields can now be optionally localized. In areas such as the Library and Store, if a wallpaper includes localization support for the user’s active language, it will be displayed in that language.

Note: To keep the wallpaper creation interface simple, localization support has not been added there yet — it’s currently available only in the wallpaper editing section.

[Taiizor]

This issue is expected to be resolved in version v25.10.14.0.

@rexxDZN I’m marking this discussion as resolved for now. Please don’t hesitate to report if the issue persists.

[Taiizor]

Well, that’s an issue of course — but does it only happen with the Living Room wallpaper, or do you see the same problem with others too?

[rexxDZN]

others too unfortunately.

[Taiizor]

Alright, I understand — I’ll test it once I gain access to a virtual ARM64 device.

[Taiizor]

@rexxDZN Hey, below are two different example applications, along with their VirusTotal scan results.
Please try running both of them separately:

📦 WatsonExample.zip – VirusTotal Result

📦 WatsonLiteExample.zip – VirusTotal Result

If they run successfully, you should see an output similar to the image below:

Please share a screenshot of this output for both applications.

When you click the address shown in the Open in browser section, it should appear as shown below:

Most likely, the WatsonExample app will not work properly on your system again, but I expect the WatsonLiteExample version to work.

[Taiizor]

I just found out that this issue appeared as a result of a recent Microsoft security update.
There are existing solutions, but they involve either uninstalling the related update or modifying certain registry entries. However, these are not viable solutions for Sucrose, since we can’t expect end users to perform such actions.

That’s why it’s important for you to test the applications I shared above and provide me with the results.

Relevant articles:
dotnet/WatsonWebserver#183
https://learn.microsoft.com/en-us/answers/questions/5585440/kb5066835-update-causing-iis-service-to-not-work
https://stackoverflow.com/questions/79790827/localhost-applications-failing-after-installing-2025-10-cumulative-update-for-w

[Taiizor]

This issue is expected to be resolved in version v25.10.20.0.

[rexxDZN]

yes it is!