gacutil : 添加.NET 4.0 assembly 到GAC失败

脚本：

E:\Program Files\Microsoft SDKs\Windows\v7.0A\bin\gacutil.exe /i AssemblyBuiltUnderNETFX4.dll 

错误信息:

Failure adding assembly to the cache:   This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.

解决方案：

E:\Program Files\Microsoft SDKs\Windows\v7.0A\bin\NETFX 4.0 Tools\gacutil.exe /i AssemblyBuiltUnderNETFX4.dll