Interesting... are you running the browser from within the server you are installing NIDB on? Like, you are logged on to the server and launch the browser there, or are you on a different PC with a browser?

If you are on the server itself, type http://127.0.0.1:10000 and it *should* redirect you to the correct https page. It may also give an error about needing to accept the certificate.

However, there may be something else going on. Maybe Webmin isn't installed correctly?

You don't really need Webmin to use the system. It just makes it easier (beleive it or not) to configure Linux.

You can edit /etc/php.ini and change your timezone (using one of these timezones: http://php.net/manual/en/timezones.php ) and also change the "error_reporting = ..." line to be "error_reporting = E_ALL & ~E_DEPRECATED & ~E_NOTICE"