Tool fails to run with System.InvalidOperationException:

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Description

Specified Docs xml locations:
  -  c:\src\dotnet\dotnet-api-docs\xml
Included assemblies:
 - System.IO.Pipelines
Included namespaces:
 - System.IO
Unhandled exception. System.InvalidOperationException: Sequence contains no elements
   at System.Linq.ThrowHelper.ThrowNoElementsException()
   at System.Linq.Enumerable.First[TSource](IEnumerable`1 source)
   at Libraries.ToTripleSlashPorter.LoadVSInstance() in C:\src\carlossanlop\DocsPortingTool\Libraries\ToTripleSlashPorter.cs:line 439
   at Libraries.ToTripleSlashPorter.Start(Configuration config) in C:\src\carlossanlop\DocsPortingTool\Libraries\ToTripleSlashPorter.cs:line 112
   at DocsPortingTool.DocsPortingTool.Main(String[] args) in C:\src\carlossanlop\DocsPortingTool\Program\DocsPortingTool.cs:line 22

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