072冒险岛客户端不能安装

问题描述：

从官网下了两次客户端都安装不了怎么回事啊
点完客户端就弹出个对话框
The installer you are trying to use is corrupted or incomplete
This could be the result of a damaged disk ,a failed download or a virus.
You may want to contact the author of this installer to obtain a new copy.
It may be possible to skip this check using the /NCRC command line switch(NOT RECOMMENDED) 这是什么意思啊

问题解答：

装不了有很多原因..请问提示什么错误..请说明白点.

不了解说清楚点