WHMCS auto script didnt quite go to plan on a sub server

Hi guys, gee i am going to burn this forum out with all my questions...

I setup a virtualmin Virtualserver then i setup a subserver as a subdomain of the parent...at least i think thats what i have done.

Virtual Server "mydomain.com.au"

sub server "whmcs.mydomain.com.au"

I ran the whmcs install script, however, it doesnt appear to have installed the database.

Below is the output (i have left out the downloading files part as that appeared all ok):

Configuring webserver PHP settings .. .. done Applying web server configuration .. .. done

Now installing WHMCS version 7.1.1 .. Database setup did not succeed More information on using this script can be found at http://www.whmcs.com/members/aff.php?aff=4115.

.. installation was only partially complete. Re-loading Webmin .. .. done

Applying web server configuration .. .. done