在这下载这安装提示：
Error Type: Microsoft.VisualStudio.Sdk.Setup.MissingPrerequisiteException
Error message: You must have Microsoft Visual Studio 2010 installed on your computer before proceeding.
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=2680
如果你安装了sp1，会提示出错，需要下载这个
http://www.microsoft.com/download/en/confirmation.aspx?displaylang=en&id=21835
Visual Studio 2010 SP1 SDK
搞了好久才搜索到是这问题。