Fail - setup virtualmin on centos 5.0

I have just setup fresh CentOS 5.0 and then setup Virtualmin via install scripts (install.sh), I can’t access to virtualmin by browser (Opera, IE,…) via https://172.16.0.2:10000
And then I reinstall virtualmin by command sh install.sh and I saw there error:


[color=#008000][root@webserver src]# ls
install.sh
[root@webserver src]# sh install.sh

Welcome to the Virtualmin GPL installer, version EA4.2

WARNING: This is an Early Adopter release.

The installation is quite stable and functional when run on a freshly
installed supported Operating System, but upgrades from existing .wbm-
based systems, or systems that already have Apache VirtualHost
directives or mail users, will very likely run into numerous problems.
Please read the Virtualmin and Early Adopter FAQs before proceeding if
your system is not a freshly installed and supported OS.

This script is not intended to update your system. It should only be
used to install Virtualmin Professional, or to upgrade a Virtualmin
GPL system that was installed manually via .wbm packages. If you have
previously installed Virtualmin via this script or the GPL version of
this script, upgrades and updates should be handled within Virtualmin
only.

The systems currently supported by our install.sh are:
CentOS 5 on i386 and x86_64
Debian 4.0 on i386 and amd64

If your OS is not listed above, this script will fail and attempting
to run it on an unsupported OS is not recommended, or supported. The
recommended operating systems for Virtualmin Professional, and more
details about them, can be found here:

http://www.virtualmin.com/os-support.html

Continue? (y/n) y
Checking for curl or wget…found /usr/bin/curl -s -O
Checking for perl…found /usr/bin/perl
Loading log4sh logging library…
INFO - Started installation log in virtualmin-install.log
INFO - Checking for fully qualified hostname…
INFO - Hostname OK: fully qualified as webserver.slife.biz
INFO - Installing serial number and license key into /etc/virtualmin-license
INFO - Loading OS selection library…
INFO - Download of http://software.virtualmin.com/lib/oschooser.pl Succeeded.
INFO - Loading OS list…
INFO - Download of http://software.virtualmin.com/lib/os_list.txt Succeeded.
INFO - Operating system name: CentOS Linux
INFO - Operating system version: 5
INFO - Installing virtualmin-release package for CentOS Linux 5…
INFO - Disabling SELinux during installation…
/usr/sbin/setenforce: SELinux is disabled
INFO - setenforce 0 failed: 1
error: /usr/share/rhn/RPM-GPG-KEY: import read failed(-1).
INFO - Download of http://software.virtualmin.com/gpl/rhel/5/i386/virtualmin-release-latest.noarch.rpm Succeeded.
package virtualmin-release-1.0-1.rhel.gpl is already installed

FATAL - Fatal Error Occurred: Installation of virtualmin-release failed: 1
FATAL - Cannot continue installation.
FATAL - Attempting to remove virtualmin repository configuration, so the installation can be
FATAL - re-attempted after any problems have been resolved.
FATAL - Removing temporary directory and files.
FATAL - If you are unsure of what went wrong, you may wish to review the log
FATAL - in /root/virtualmin-install.log.[/color]

Please help me resolve this problem, thanks you very much.

try http://172.16.0.2:10000 instead