Missing IVI.visa.dll and NationalInstruments.Visa.dll after IVI ICPSetup-1601f2

I am missing the IVI and NI Visa .NET DLLs.  This is both on a new system and a system that was updated 1/2/2017 using the latest patch (16.0.1)

1. Is this a known issue?
2. Please advise of a quick way to install these file, e.g., what package from the CD could be used from the command line with the /reinstall option

Thanks 

David