• Created global.json with version 8.0.100

• dotnet new blazor --use-program-main -o BlazorApp

• dotnet new blazor --use-program-main -o BlazorPlugin

• dotnet add .\BlazorApp\BlazorApp.csproj reference .\BlazorPlugin\BlazorPlugin.csproj

• dotnet build .\BlazorApp\BlazorApp.csproj

• dotnet clean

• Manuall delete obj and bin directories

• Change global.json to use version 10.0.100

• Change projects to reference net10.0

• dotnet build .\BlazorApp\BlazorApp.csproj

dotnet build .\BlazorApp\BlazorApp.csproj
Restore complete (1,1s)
  BlazorPlugin net10.0 succeeded (3,1s) → BlazorPlugin\bin\Debug\net10.0\BlazorPlugin.dll
  BlazorApp net10.0 failed with 1 error(s) (1,0s)
    C:\Program Files\dotnet\sdk\10.0.100\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.Compression.targets(297,5): error MSB4018:
      The "DiscoverPrecompressedAssets" task failed unexpectedly.
      System.ArgumentException: An item with the same key has already been added. Key: C:\Users\daniel\.nuget\packages\m
      icrosoft.aspnetcore.app.internal.assets\10.0.0\_framework\blazor.web.js
         at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
         at System.Linq.Enumerable.SpanToDictionary[TSource,TKey](ReadOnlySpan`1 source, Func`2 keySelector, IEqualityCo
      mparer`1 comparer)
         at System.Linq.Enumerable.ToDictionary[TSource,TKey](IEnumerable`1 source, Func`2 keySelector, IEqualityCompare
      r`1 comparer)
         at Microsoft.AspNetCore.StaticWebAssets.Tasks.DiscoverPrecompressedAssets.Execute()
         at Microsoft.Build.BackEnd.TaskExecutionHost.Execute()
         at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(TaskExecutionHost taskExecutionHost, TaskLogging
      Context taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask)

Build failed with 1 error(s) in 5,8s