Exception on startup

[chk]

Happens in recent preview, when trying to open a second instance.

IOException: "The process cannot access the file 'C:\Users\Christoph\AppData\Local\Temp\vvvv-package-cache\2022.5.0-0552-g0c5211ddeb\VL.NuGet.HDE.0.0.4-alpha\VL.NuGet.HDE.vl.dll' because it is being used by another process."
    StackTrace:
        Microsoft.Win32.SafeHandles.SafeFileHandle { private static Microsoft.Win32.SafeHandles.SafeFileHandle CreateFile(string fullPath, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.IO.FileOptions options) { ... } } 
        Microsoft.Win32.SafeHandles.SafeFileHandle { internal static Microsoft.Win32.SafeHandles.SafeFileHandle Open(string fullPath, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.IO.FileOptions options, long preallocationSize) { ... } } 
        
        VL.Lang.PackageCompiler+<CompileCoreAsync>d__35 { private virtual void MoveNext() { ... } } 
        System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter`1 { public TResult GetResult() { ... } } 
        VL.Lang.PackageCompiler+<CompileAsync>d__33 { private virtual void MoveNext() { ... } } 
        System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task) { ... } } 
        VL.Lang.PackageCompiler+<CompilePackagesAsync>d__32 { private virtual void MoveNext() { ... } } 
        System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task) { ... } } 
        VL.Model.Internal.Solution+<RestoreAsync>d__13 { private virtual void MoveNext() { ... } } 
        System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter`1 { public TResult GetResult() { ... } } 
        VL.Model.Internal.Solution+<NewDocumentAsync>d__11 { private virtual void MoveNext() { ... } } 
        System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter`1 { public TResult GetResult() { ... } } 
        VL.Model.Solution+<NewDocumentAsync>d__49 { private virtual void MoveNext() { ... } } 
        System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter`1 { public TResult GetResult() { ... } } 
        VL.Model.VLSession+<NewDocumentAsync>d__164 { private virtual void MoveNext() { ... } } 
        System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task) { ... } } 
        VL.UI.Forms.VLContext+<InitializeAsync>d__11 { private virtual void MoveNext() { ... } } 
        System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task) { ... } } 
        System.Runtime.CompilerServices.TaskAwaiter { public void GetResult() { ... } } 
        VL.UI.Forms.VLContext+<<OnOpen>b__10_0>d { private virtual void MoveNext() { ... } } 

[Elias]

Are you opening those two instances at the same time, or one after the other?

[chk]

One after the other, using the GammaLauncher.

[Elias]

Hm, installed the same version, the same (outdated) package, but sadly can’t reproduce.

[chk]

Weird! It even happens when I restart my machine… I open GammaLauncher, start VVVV, wait until its loaded and then try to open another instance using the GammaLauncher. Then the exception comes up.

[Elias]

I get it now too, but I had to delete AppData\Local\Temp\vvvv-package-cache\2022.5.0-0552-g0c5211ddeb\VL.NuGet.HDE.0.0.4-alpha first.

Edit: And I need to start the second instance rather quickly. Once I wait until #1 is loaded the exception is not happening.