SM crash when installing ComfyUI

[Dan0MD]

What happened?

OS: Linux Fedora KDE Plasma Desktop 43
GPU: GTX 1070 Ti 8GB (official nvidia driver)
Stability Matrix 2.15.8 AppImage

1. Starting Stability Matrix
2. Installing ComfyUI v0.21.1 package (Python 3.1.19)
3. System.DllNotFoundException: Could not load /home/dan/Applications/Data/Assets/Python310/lib/libpython3.10.so with flags RTLD_NOW | RTLD_GLOBAL: libcrypt.so.1: cannot open shared object file: No such file or directory
4. Terminal: sudo dnf install libxcrypt-compat
5. Restarting Stability Matrix
6. Installing ComfyUI v0.21.1 package (Python 3.1.19)
7. Started -> Installed a part of it
8. Crash of Stability Matrix

Before I used it on Windows 10, ComfyUI v0.17.1, Python 3.10.11 and it worked.

Exception Details

Exception

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

Sentry ID

174775d0

Stack Trace

   at Avalonia.Controls.Primitives.Popup.Open()
   at Avalonia.Controls.Primitives.Popup.IsOpenChanged(AvaloniaPropertyChangedEventArgs`1 e)
   at Avalonia.Reactive.LightweightObservableBase`1.PublishNext(T value)
   at Avalonia.PropertyStore.EffectiveValue`1.NotifyValueChanged(ValueStore owner, StyledProperty`1 property, T oldValue)
   at Avalonia.PropertyStore.EffectiveValue`1.SetAndRaiseCore(ValueStore owner, StyledProperty`1 property, T value, BindingPriority priority, Boolean isOverriddenCurrentValue, Boolean isCoercedDefaultValue)
   at Avalonia.PropertyStore.ValueStore.SetLocalValue[T](StyledProperty`1 property, T value)
   at Avalonia.PropertyStore.ValueStore.SetValue[T](StyledProperty`1 property, T value, BindingPriority priority)
   at FluentAvalonia.UI.Controls.TeachingTip.IsOpenChangedToOpen()
   at Avalonia.Threading.DispatcherOperation.InvokeCore()
   at Avalonia.Threading.DispatcherOperation.Execute()
   at Avalonia.Threading.Dispatcher.ExecuteJob(DispatcherOperation job)
   at Avalonia.Threading.Dispatcher.ExecuteJobsCore(Boolean fromExplicitBackgroundProcessingCallback)
   at Avalonia.Threading.Dispatcher.Signaled()
   at Avalonia.X11.X11PlatformThreading.CheckSignaled()
   at Avalonia.X11.X11PlatformThreading.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-2026-05-27-19-06-55.zip](https://github.com/user-attachments/files/28316017/stabilitymatrix-log-2026-05-27-19-06-55.zip)

### Version

2.15.8

### What Operating System are you using?

Linux