12/01/12 02:16:03.72 OS2mZTg4
This issue occurs as Visual Studio 2010 SP1 installs a newer version of Microsoft Visual C++ 2010 Redistributable than the VC++ runtime included in Windows SDK 7.1. So the installation of Windows SDK 7.1 is blocked with the error message.
俺はこれで糞ハマったわｗ