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An Unexpected Error while installing for the first time #1383

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An Unexpected Error while installing for the first time#1383
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bugSomething isn't workingcrashBugs involving the app crashing to desktop

Description

@abstractrealism
abstractrealism
opened on Sep 16, 2025

What happened?

  1. Opened it for the first time
  2. Installed a first UI and model, I believe it was Forge and something realism, both were just the first choice in their respective lists, to test it out.
  3. While installing got this error

Exception Details

Exception

NullReferenceException: Object reference not set to an instance of an object.

Sentry ID

2865eed4

Stack Trace

   at Avalonia.Threading.Dispatcher.ExecuteJob(DispatcherOperation job)
   at Avalonia.Threading.Dispatcher.ExecuteJobsCore(Boolean fromExplicitBackgroundProcessingCallback)
   at Avalonia.Threading.Dispatcher.Signaled()
   at Avalonia.Win32.Win32Platform.WndProc(IntPtr hWnd, UInt32 msg, IntPtr wParam, IntPtr lParam)
   at Avalonia.Win32.Interop.UnmanagedMethods.DispatchMessage(MSG& lpmsg)
   at Avalonia.Win32.Win32DispatcherImpl.RunLoop(CancellationToken cancellationToken)
   at Avalonia.Threading.DispatcherFrame.Run(IControlledDispatcherImpl impl)
   at Avalonia.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at Avalonia.Threading.Dispatcher.MainLoop(CancellationToken cancellationToken)
   at Avalonia.Controls.ApplicationLifetimes.ClassicDesktopStyleApplicationLifetime.StartCore(String[] args)
   at StabilityMatrix.Avalonia.Program.Main(String[] args)```

[stabilitymatrix-log-2025-09-15-22-27-50.zip](https://github.com/user-attachments/files/22354535/stabilitymatrix-log-2025-09-15-22-27-50.zip)

### Version

2.15.0

### What Operating System are you using?

Windows

Activity

  1. abstractrealism
    added
    bugSomething isn't working
    crashBugs involving the app crashing to desktop
    on Sep 16, 2025

  2. abstractrealism commented on Sep 16, 2025

    @abstractrealism
    abstractrealism
    on Sep 16, 2025
    Author

    Tried again and got this:
    Traceback (most recent call last):
    File "F:\StableDiffusion\Stability Matrix\Data\Packages\stable-diffusion-webui-amdgpu-forge\launch.py", line 54, in
    main()
    File "F:\StableDiffusion\Stability Matrix\Data\Packages\stable-diffusion-webui-amdgpu-forge\launch.py", line 42, in main
    prepare_environment()
    File "F:\StableDiffusion\Stability Matrix\Data\Packages\stable-diffusion-webui-amdgpu-forge\modules\launch_utils.py", line 582, in prepare_environment
    if not requirements_met(requirements_file):
    File "F:\StableDiffusion\Stability Matrix\Data\Packages\stable-diffusion-webui-amdgpu-forge\modules\launch_utils.py", line 336, in requirements_met
    import packaging.version
    ModuleNotFoundError: No module named 'packaging'

  3. abstractrealism commented on Sep 23, 2025

    @abstractrealism
    abstractrealism
    on Sep 23, 2025
    Author

    Have tried a few times now, have yet to get either Forge or ComfyUI Zluda to even launch, let alone generate anything.

  4. james-banks commented on Oct 20, 2025

    @james-banks
    james-banks
    on Oct 20, 2025

    I'd recommend trying SD Next for AMD support, Forge is quite old now.

  5. timm1k commented on Dec 31, 2025

    @timm1k
    timm1k
    on Dec 31, 2025

    Have tried a few times now, have yet to get either Forge or ComfyUI Zluda to even launch, let alone generate anything.

    1. what is your Graphics Card model? even with ZLUDA, support is bit sketchy for GPUs under RX 6800.
    2. Can you put whole log from start of Comfy UI?
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