error: vnc-3.3.3r2-6.aix5.1.ppc.rpm cannot be installed

请问各位，我的AIX环境是6.1，在安装vnc-3.3.3r2-6.aix5.1.ppc.rpm这个软件包的时候报如下错误：# rpm -ivh vnc-3.3.3r2-6.aix5.1.ppc.rpm
error: vnc-3.3.3r2-6.aix5.1.ppc.rpm cannot be installed


该软件包上传的时候我是以二进制的形式上传的
ftp> bin
200 Type set to I.
ftp> put vnc-3.3.3r2-6.aix5.1.ppc.rpm
200 PORT command successful.
150 Opening data connection for vnc-3.3.3r2-6.aix5.1.ppc.rpm.
226 Transfer complete.
ftp: 1091340 bytes sent in 19.05Seconds 57.29Kbytes/sec.
ftp>


请问各位仁兄是什么原因导致的了呢？