Win8 安装msi文件遇到错误 code=2502/2503的解决办法
Win8系统安装msi文件时遇到问题，弹出两个对话框：
The installer has encountered an unexpected error installing this package.this may indicate a problem with package.the error code is 2502.
The installer has encountered an unexpected error installing this package.this may indicate a problem with package.the error code is 2503.
这是Win8系统的权限问题，可以如下解决:
文章来自：http://blog.csdn.net/gavid0124/article/details/46418243