After installing the .NET Framework 4, programs, like Rhino that require it, still do not believe it is installed and refuse to run.
Both report the .NET Framework 4 installation was successful and it appears in the list of installed programs in Control Panel.
Rebooted and Reinstalled but nothing has worked.
The Microsoft .NET Framework 4/4.5 web installer package downloads and installs the .NET Framework components required to run on the target machine architecture and OS.
An Internet connection is required during the installation. .NET Framework 4 is required to run and develop applications to target the .NET Framework 4 for Zoo 5 and .NET Framework 4.5 for Zoo 6.
This version of the .NET Framework runs side-by-side with the .NET Framework 3.5 and earlier versions, but performs an in-place update for the .NET Framework 4.