嗨Sachin，

Hi Sachin,

似乎与SilverLight 4.0版本不匹配。请尝试卸载Silverlight，然后再次运行安装程序。

It appears that there is a version mismatch with SilverLight 4.0. Please try unininstalling Silverlight and then running the setup again.

希望这有帮助，