Error with latest .net Core and VS2015

I have installed the latest .net Core Runtime (1.1.1) and SDK (1.0.1) versions and I am getting the following error:

The following error occurred attempting to run the project model server process (1.0.1).  Unable to start the process.  No executable found matching comment "dotnet-projectmodel-server".  and it goes on from there ...

Things had been working correctly with a previous version of .net and VS2015.

I tried uninstalling both the runtime and sdk, but I am still getting the same error.

Please let me know if you need additional info to figure out how I am messing up.

project.json

{
  "version": "1.0.0-*","buildOptions": {"emitEntryPoint": true
  },"dependencies": {"Microsoft.NETCore.App": {"type": "platform","version": "1.1.1"
    }
  },"frameworks": {"netcoreapp1.0": {"imports": "dnxcore50"
    }
  }
}

global.json

{
  "projects": [ "src", "test" ],"sdk": {"version": "1.0.1"
  }
}

Thanks!