Unable to create repository in VS2015

[meaghanlewis]

Version

• GitHub Extension for Visual Studio version:
  2.4.0.1161
• Visual Studio version:
  Microsoft Visual Studio Community 2015
  Version 14.0.25431.01 Update 3

What happened
I try to create a GitHub or ghe.io repository in VS2015, but nothing happens after I press the create button.

In the log, I see:

System.InvalidOperationException: Could not locate any instances of contract Microsoft.TeamFoundation.Git.Controls.Extensibility.IGitRepositoriesExt.
   at GitHub.VisualStudio.GitHubServiceProvider.GetService(Type serviceType) in C:\projects\visualstudio\src\GitHub.VisualStudio\Services\GitHubServiceProvider.cs:line 192
   at GitHub.VisualStudio.GitHubServiceProvider.GetService[T]() in C:\projects\visualstudio\src\GitHub.VisualStudio\Services\GitHubServiceProvider.cs:line 198
   at GitHub.VisualStudio.GitHubProviderDispatcher.GetService[T]() in C:\projects\visualstudio\src\GitHub.VisualStudio\Services\GitHubServiceProvider.cs:line 61
   at GitHub.Services.VSGitServices.<Clone>d__5.MoveNext() in C:\projects\visualstudio\src\GitHub.TeamFoundation.14\Services\VSGitServices.cs:line 79
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at GitHub.Services.RepositoryCloneService.<CloneRepository>d__6.MoveNext() in C:\projects\visualstudio\src\GitHub.App\Services\RepositoryCloneService.cs:line 66```


**Note:** This is only a problem with VS2015 and VS2017 works as expected.