[Bug]: Previewer Process Crashes on rebuild/build #202

03:58:20.104 [Information] [AvaloniaPackage] Logging initialized.
03:58:20.107 [Information] [AvaloniaPackage] File logging disabled
03:58:20.116 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:58:20.130 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:58:20.131 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:58:20.132 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:58:20.369 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:58:20.371 [Information] [AvaloniaPackage] Avalonia context activated. User signed in: True
03:58:20.757 [Warning] [AxamlClassifier (#43620368)] Could not get classifications: source not yet loaded.
03:58:20.966 [Warning] [AxamlThicknessAdornmentTagger (#36463702)] Unable to obtain parsed XAML because the request returned null
03:58:20.966 [Warning] [AxamlColorAdornmentTagger (#60426628)] Unable to obtain parsed XAML because the request returned null
03:58:21.124 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:58:21.125 [Information] [AvaloniaEditorWithPreview (#32842235)] User is signed in
03:58:21.163 [Information] [CpsProjectInfoService] Evaluating project metadata via CPS for 'E:\Workspace\Mehar\src\Mehar.Desktop\Mehar.Desktop.csproj'
03:58:21.239 [Information] [PreviewerProcess (#11257801)] Starting previewer process for target E:\Workspace\Mehar\src\Mehar.Desktop\bin\Debug\net10.0\Mehar.Desktop.dll (ShadowCopy=False, NewHostApp=False)
03:58:21.243 [Information] [PreviewerProcess (#11257801)] [17844] Started previewer process for 'E:\Workspace\Mehar\src\Mehar.Desktop\bin\Debug\net10.0\Mehar.Desktop.dll'. Waiting for connection to be initialized.
03:58:21.355 [Information] [PreviewerProcess (#11257801)] [17844] Connection initialized
03:58:43.936 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:58:43.936 [Information] [AvaloniaEditorWithPreview (#3951742)] User is signed in
03:58:43.987 [Information] [CpsProjectInfoService] Evaluating project metadata via CPS for 'E:\Workspace\Mehar\src\Mehar.Desktop\Mehar.Desktop.csproj'
03:58:43.999 [Information] [PreviewerProcess (#52634865)] Starting previewer process for target E:\Workspace\Mehar\src\Mehar.Desktop\bin\Debug\net10.0\Mehar.Desktop.dll (ShadowCopy=False, NewHostApp=False)
03:58:43.999 [Information] [PreviewerProcess (#52634865)] [19572] Started previewer process for 'E:\Workspace\Mehar\src\Mehar.Desktop\bin\Debug\net10.0\Mehar.Desktop.dll'. Waiting for connection to be initialized.
03:58:44.062 [Information] [PreviewerProcess (#52634865)] [19572] Connection initialized
03:58:56.474 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:58:56.476 [Information] [AvaloniaEditorWithPreview (#26546824)] User is signed in
03:58:56.513 [Information] [CpsProjectInfoService] Evaluating project metadata via CPS for 'E:\Workspace\Mehar\src\Mehar.Desktop\Mehar.Desktop.csproj'
03:58:56.523 [Information] [PreviewerProcess (#25319268)] Starting previewer process for target E:\Workspace\Mehar\src\Mehar.Desktop\bin\Debug\net10.0\Mehar.Desktop.dll (ShadowCopy=False, NewHostApp=False)
03:58:56.523 [Information] [PreviewerProcess (#25319268)] [20992] Started previewer process for 'E:\Workspace\Mehar\src\Mehar.Desktop\bin\Debug\net10.0\Mehar.Desktop.dll'. Waiting for connection to be initialized.
03:58:56.587 [Information] [PreviewerProcess (#25319268)] [20992] Connection initialized
03:59:16.560 [Information] [PreviewerProcess (#25319268)] Stopping previewer process
03:59:16.562 [Information] [PreviewerProcess (#25319268)] Stopping previewer process
03:59:16.562 [Information] [PreviewerProcess (#25319268)] Process exited: GenericError
03:59:16.562 [Information] [PreviewerProcess (#25319268)] Stopping previewer process
03:59:16.584 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:59:16.584 [Information] [AvaloniaEditorWithPreview (#3951742)] User is signed in
03:59:17.555 [Information] [PreviewerProcess (#52634865)] Stopping previewer process
03:59:17.559 [Information] [PreviewerProcess (#52634865)] Stopping previewer process
03:59:17.559 [Information] [PreviewerProcess (#52634865)] Process exited: GenericError
03:59:17.559 [Information] [PreviewerProcess (#52634865)] Stopping previewer process
03:59:17.573 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
03:59:17.573 [Information] [AvaloniaEditorWithPreview (#32842235)] User is signed in
03:59:18.463 [Information] [PreviewerProcess (#11257801)] Stopping previewer process
03:59:18.479 [Information] [PreviewerProcess (#11257801)] Stopping previewer process
03:59:18.479 [Information] [PreviewerProcess (#11257801)] Process exited: GenericError
03:59:18.479 [Information] [PreviewerProcess (#11257801)] Stopping previewer process
04:01:22.377 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
04:01:38.986 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
04:01:38.987 [Information] [AvaloniaEditorWithPreview (#36570070)] User is signed in
04:01:39.701 [Information] [PreviewerProcessFactory] Resolving metadata for 'E:\Workspace\Mehar\src\Mehar.Desktop\Mehar.Desktop.csproj' (TFM=net10.0)
04:01:39.724 [Information] [CpsAssetsPreviewerMetadataService] Resolving extra packages [Avalonia.Headless, Avalonia.Markup.Xaml.Loader] (Avalonia 12.1.3, net10.0)
04:01:41.125 [Information] [ShadowCopyOutputStrategy] Shadow copy created at 'C:\Users\walia\AppData\Local\AvaloniaUI\com.AvaloniaUI.Net.VisualStudio\Previewer\Mehar.Desktop_jcYUsop-U699lPV3' (8 files)
04:01:41.142 [Information] [PreviewerProcess (#56259124)] Starting previewer process for target C:\Users\walia\AppData\Local\AvaloniaUI\com.AvaloniaUI.Net.VisualStudio\Previewer\Mehar.Desktop_jcYUsop-U699lPV3\Mehar.Desktop.dll (ShadowCopy=True, NewHostApp=True)
04:01:41.146 [Information] [PreviewerProcess (#56259124)] [20628] Started previewer process for 'C:\Users\walia\AppData\Local\AvaloniaUI\com.AvaloniaUI.Net.VisualStudio\Previewer\Mehar.Desktop_jcYUsop-U699lPV3\Mehar.Desktop.dll'. Waiting for connection to be initialized.
04:01:41.269 [Information] [PreviewerProcess (#56259124)] [20628] Connection initialized
04:04:36.671 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
04:04:36.671 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
04:04:36.724 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
04:04:36.724 [Information] [AvaloniaEditorWithPreview (#9224559)] User is signed in
04:04:36.925 [Information] [PreviewerProcessFactory] Resolving metadata for 'E:\Workspace\Mehar\src\Mehar.Desktop\Mehar.Desktop.csproj' (TFM=net10.0)
04:04:36.931 [Information] [CpsAssetsPreviewerMetadataService] Resolving extra packages [Avalonia.Headless, Avalonia.Markup.Xaml.Loader] (Avalonia 12.1.3, net10.0)
04:04:36.941 [Information] [ShadowCopyOutputStrategy] Shadow copy reused at 'C:\Users\walia\AppData\Local\AvaloniaUI\com.AvaloniaUI.Net.VisualStudio\Previewer\Mehar.Desktop_jcYUsop-U699lPV3' (8 files)
04:04:36.955 [Information] [PreviewerProcess (#38307653)] Starting previewer process for target C:\Users\walia\AppData\Local\AvaloniaUI\com.AvaloniaUI.Net.VisualStudio\Previewer\Mehar.Desktop_jcYUsop-U699lPV3\Mehar.Desktop.dll (ShadowCopy=True, NewHostApp=True)
04:04:36.957 [Information] [PreviewerProcess (#38307653)] [17076] Started previewer process for 'C:\Users\walia\AppData\Local\AvaloniaUI\com.AvaloniaUI.Net.VisualStudio\Previewer\Mehar.Desktop_jcYUsop-U699lPV3\Mehar.Desktop.dll'. Waiting for connection to be initialized.
04:04:37.036 [Information] [PreviewerProcess (#38307653)] [17076] Connection initialized
04:04:38.100 [Error] [PreviewerProcess (#38307653)] System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'Window'.
   at Avalonia.Headless.HeadlessWindowExtensions.GetImpl(TopLevel topLevel)
   at Avalonia.Headless.HeadlessWindowExtensions.RunJobsOnImpl(TopLevel topLevel, Action`1 action)
   at Avalonia.Headless.HeadlessWindowExtensions.CaptureRenderedFrame(TopLevel topLevel)
   at i.i()
   at Avalonia.Threading.DispatcherOperation.InvokeCore()
04:05:52.831 [Error] [PreviewerProcess (#38307653)] System.ArgumentException: StaticResourceExtension.ResourceKey must be set.
   at Avalonia.Markup.Xaml.MarkupExtensions.StaticResourceExtension.ProvideValue(IServiceProvider serviceProvider, Object resourceKey)
   at Builder_4c78c44aac5347519cd5fab426e67058_avares___Mehar_Desktop_Fake_xaml.__AvaloniaXamlIlPopulate(IServiceProvider, IdentityView)
   at Avalonia.Markup.Xaml.XamlIl.AvaloniaXamlIlRuntimeCompiler.<>c__DisplayClass16_0.<LoadOrPopulate>b__0(Object target)
   at Mehar.Desktop.Views.IdentityView.!XamlIlPopulateTrampoline(IdentityView)
   at Mehar.Desktop.Views.IdentityView.InitializeComponent(Boolean loadXaml) in E:\Workspace\Mehar\src\Mehar.Desktop\obj\Debug\net10.0\Avalonia.Generators\Avalonia.Generators.NameGenerator.AvaloniaNameIncrementalGenerator\Mehar.Desktop.Views.IdentityView.g.cs:line 24
   at Mehar.Desktop.Views.IdentityView..ctor() in E:\Workspace\Mehar\src\Mehar.Desktop\Views\IdentityView.axaml.cs:line 9
   at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean wrapExceptions)
04:05:54.361 [Error] [PreviewerProcess (#38307653)] System.ArgumentException: StaticResourceExtension.ResourceKey must be set.
   at Avalonia.Markup.Xaml.MarkupExtensions.StaticResourceExtension.ProvideValue(IServiceProvider serviceProvider, Object resourceKey)
   at Builder_2688f04586dd4f11b506875d17efe5ac_avares___Mehar_Desktop_Fake_xaml.__AvaloniaXamlIlPopulate(IServiceProvider, IdentityView)
   at Avalonia.Markup.Xaml.XamlIl.AvaloniaXamlIlRuntimeCompiler.<>c__DisplayClass16_0.<LoadOrPopulate>b__0(Object target)
   at Mehar.Desktop.Views.IdentityView.!XamlIlPopulateTrampoline(IdentityView)
   at Mehar.Desktop.Views.IdentityView.InitializeComponent(Boolean loadXaml) in E:\Workspace\Mehar\src\Mehar.Desktop\obj\Debug\net10.0\Avalonia.Generators\Avalonia.Generators.NameGenerator.AvaloniaNameIncrementalGenerator\Mehar.Desktop.Views.IdentityView.g.cs:line 24
   at Mehar.Desktop.Views.IdentityView..ctor() in E:\Workspace\Mehar\src\Mehar.Desktop\Views\IdentityView.axaml.cs:line 9
   at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean wrapExceptions)
04:06:04.779 [Information] [PreviewerProcess (#38307653)] Stopping previewer process
04:06:04.779 [Information] [PreviewerProcessFactory] Resolving metadata for 'E:\Workspace\Mehar\src\Mehar.Desktop\Mehar.Desktop.csproj' (TFM=net10.0)
04:06:04.779 [Information] [CpsAssetsPreviewerMetadataService] Resolving extra packages [Avalonia.Headless, Avalonia.Markup.Xaml.Loader] (Avalonia 12.1.3, net10.0)
04:06:04.795 [Error] [PreviewerProcessFactory] Shadow-copy preparation failed for 'E:\Workspace\Mehar\src\Mehar.Desktop\Mehar.Desktop.csproj'
System.IO.IOException: The process cannot access the file 'C:\Users\walia\AppData\Local\AvaloniaUI\com.AvaloniaUI.Net.VisualStudio\Previewer\Mehar.Desktop_jcYUsop-U699lPV3\Mehar.Desktop.dll' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite, Boolean checkHost)
   at te.anb(ShadowCopyRequest a, CancellationToken b)
   at AvaloniaUI.Previewer.Process.Output.ShadowCopyOutputStrategy.<PrepareShadowCopyAsync>d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at AvaloniaUI.Previewer.Process.Output.ShadowCopyOutputStrategy.<PrepareAsync>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at AvaloniaUI.Previewer.Process.PreviewerProcessFactory.<CreateLaunchOptionsAsync>d__12.MoveNext()
04:06:04.795 [Information] [PreviewerProcess (#38307653)] Process exited: GenericError
04:06:04.795 [Information] [PreviewerProcess (#38307653)] Stopping previewer process
04:10:20.509 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
04:10:20.509 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
04:10:20.533 [Information] [AuthenticationService] Restoring previous session: 10/02/2026 21:00:52 +00:00 / 10/12/2026 21:00:52 +00:00
04:10:20.533 [Information] [AvaloniaEditorWithPreview (#9224559)] User is signed in
04:10:20.533 [Information] [PreviewerProcessFactory] Resolving metadata for 'E:\Workspace\Mehar\src\Mehar.Desktop\Mehar.Desktop.csproj' (TFM=net10.0)
04:10:20.547 [Error] [PreviewerProcessFactory] Shadow-copy preparation failed for 'E:\Workspace\Mehar\src\Mehar.Desktop\Mehar.Desktop.csproj'
System.IO.IOException: The process cannot access the file 'C:\Users\walia\AppData\Local\AvaloniaUI\com.AvaloniaUI.Net.VisualStudio\Previewer\Mehar.Desktop_jcYUsop-U699lPV3\Mehar.Desktop.dll' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite, Boolean checkHost)
   at te.anb(ShadowCopyRequest a, CancellationToken b)
   at AvaloniaUI.Previewer.Process.Output.ShadowCopyOutputStrategy.<PrepareShadowCopyAsync>d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at AvaloniaUI.Previewer.Process.Output.ShadowCopyOutputStrategy.<PrepareAsync>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at AvaloniaUI.Previewer.Process.PreviewerProcessFactory.<CreateLaunchOptionsAsync>d__12.MoveNext()
04:10:20.533 [Information] [CpsAssetsPreviewerMetadataService] Resolving extra packages [Avalonia.Headless, Avalonia.Markup.Xaml.Loader] (Avalonia 12.1.3, net10.0)