摘要： 前些天把vs2008升级到sp1,今天本想安装Silverlight Tools 2.0 Beta 2，不料老安装时发生严重错误，查看安装日志如下提示：(IronSpigot::ExeInstallerBase::PerformAction) PerformOperation on exe returned exit code 1603 (translates to HRESULT = 0x800... 阅读全文