我下载的是3DMGAME-Bulletstorm.2011.MULT7.PC，无法安装？

nukerat

镜像大小是7,441,089,456 字节，点击SETUP选择安装目录后给出错误代码0x800b010a，打开xliveinstall.log看里面说
(00:41:27) File 'G:\Setup.exe' was not signed correctly or its contents are invalid.
(00:41:27) Failed to verify calling exe: G:\Setup.exe
这个怎么解决啊？