The Microsoft Visual C++ 2010 SP1 Redistributable Package installs runtime components of Visual C++ Libraries required to run ATS CM4D on a computer that does not have Visual C++ 2010 SP1 installed.

The Microsoft Visual C++ 2010 SP1 Redistributable Package installs runtime components of Visual C++ Libraries required to run ATS CM4D on a computer that does not have Visual C++ 2008 SP1 installed.

The Microsoft .NET Framework 4.0 Client installs a .NET 4.0 Client that is required to run ATS CM4D's v19Migrator program on a computer that does not have a .NET Framework of 4.0 or higher.

The redistributables will only be installed if the computer does not meet these requirements.