macbook pro 安装office 2011 for mac 提示You must quit the follow

macbook pro 安装office 2011 for mac 提示You must quit the following applications before you continu
安装office 2011 for mac 提示You must quit the following applications before you continue 内容是：This installation cannot be completed while the following software is running.
safari
是怎么回事啊?我从新下了好几个2011破解的安装包就是安不了～!高分怎么弄啊