Sdk: Getting ASP.NET Core 2.0 Final error with .NET Core 2.0: Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly 'System.Diagnostics.DiagnosticSource

[guidefreitas]

Steps to reproduce

Create a ASP.NET Core 2.0 (final) project or any project with:

dotnet restore
dotnet run

Expected behavior

Run without errors or warnings

Actual behavior

Dotnet run results in the error below:

dotnet run:
/usr/local/share/dotnet/sdk/2.0.0-preview2-006497/Microsoft.Common.CurrentVersion.targets(1984,5): warning MSB3277: Found conflicts between different versions of the same dependent assembly that could not be resolved. These reference conflicts are listed in the build log when log verbosity is set to detailed. [/Users/guilherme/Desktop/CatalogWeb/CatalogWeb.csproj]

Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly 'System.Diagnostics.DiagnosticSource, Version=4.0.2.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
at Microsoft.AspNetCore.Hosting.WebHostBuilder.BuildCommonServices(AggregateException& hostingStartupErrors)
at Microsoft.AspNetCore.Hosting.WebHostBuilder.Build()
at CatalogWeb.Program.BuildWebHost(String[] args) in /Users/guilherme/Desktop/CatalogWeb/Program.cs:line 21
at CatalogWeb.Program.Main(String[] args) in /Users/guilherme/Desktop/CatalogWeb/Program.cs:line 17

Environment data

dotnet --info output:
.NET Command Line Tools (2.0.0-preview2-006497)

Product Information:
Version: 2.0.0-preview2-006497
Commit SHA-1 hash: 06a2093335

Runtime Environment:
OS Name: Mac OS X
OS Version: 10.13
OS Platform: Darwin
RID: osx.10.12-x64
Base Path: /usr/local/share/dotnet/sdk/2.0.0-preview2-006497/

Microsoft .NET Core Shared Framework Host

Version : 2.0.0-preview2-25407-01
Build : 40c565230930ead58a50719c0ec799df77bddee9

[guidefreitas]

The issue was solved using the latest .NET Core 2.0 release (final - https://download.microsoft.com/download/0/F/D/0FD852A4-7EA1-4E2A-983A-0484AC19B92C/dotnet-sdk-2.0.0-osx-x64.pkg).

[nguerrera]

Glad to hear the issue was solved with newer bits. :)

[dianewanghalsey]

I am running into the same error after updated .net core final release. I cannot install pkg on window, do you have fix for window 64?

[nguerrera]

@dianewanghalsey I'm guessing the steps to reproduce the problem for you are not the same as listed in this bug's description, are they?

[d-saravanan]

Updating to Visual Studio 2017, 15.4, Preview 1 and installing the dotnet core 2.0 final release enabled me to get rid of this error and i am able to run the app now. Thanks 👍

[PenchoPenchev]

Updating to Visual Studio 2017, 15.4, Preview 1 and installing the dotnet core 2.0 final release enabled resolved my odd problem also

[dealscart]

Mine got resolved by upgrading the IOS version to 10.13.1 . MAC OS High Sierra