WIN7下安装不了VS2010旗舰版

就是安装“Microsoft Visual Studio 2010 Ultimate - CHS”组件时发生错误了
以下是错误日志
[02/25/12,20:57:05] Microsoft Visual Studio 2010 Ultimate - CHS: [2] CRootComponent::Install(): Cannot install; setup files failed verification.
[02/25/12,20:57:06] Microsoft Visual Studio 2010 Ultimate - CHS: [2] ERROR_INSTALL_PACKAGE_INVALID returned in CRootComponent::Install; the following file is invalid: d:\chanyong\cn_visual_studio_2010_ultimate_x86_dvd_532347\vs_setup.msi
[02/25/12,20:57:07] VS70pgui: [2] DepCheck indicates Microsoft Visual Studio 2010 Ultimate - CHS is not installed.
[02/25/12,20:57:07] VS70pgui: [2] DepCheck indicates Microsoft Web 部署工具(x64) was not attempted to be installed.
[02/25/12,20:57:07] VS70pgui: [2] DepCheck indicates Microsoft ASP.NET MVC 2 - Visual Studio 2010 工具 was not attempted to be installed.
[02/25/12,20:57:07] VS70pgui: [2] DepCheck indicates Microsoft ASP.NET MVC 2 - Visual Studio 2010 工具语言包 - 简体中文 was not attempted to be installed.
[02/25/12,20:57:07] VS70pgui: [2] DepCheck indicates Microsoft ASP.NET MVC 2 was not attempted to be installed.